VUG
Vanguard Morningstar Growth ETF
stock NYSE ETF

I recommend familiarizing yourself with concepts like growth, value, market cap sizes, dividends, money market/HYSE/bonds, etc.
It really depends on your goals and risk tolerance.
As much as l loathe data centers l found Claude to be extremely impressive and helpful in providing insights based on my portfolio and stated goals. Saved a ton of time researching which funds overlap in terms of holdings, which would be redundant, etc. Keep in mind that it isn't the end-all though.
I personally spread mine out between a single high growth/risk (VUG), several value focused funds targeting different caps, and international/emerging markets. My Roth also has some metals etfs (which can be tied just to the price of specific metals, include mining companies, or both).

small cap is normally more aggressive than large cap.
IJR outperformed VUG from 2004 to about late 2019 or early 2020. https://imgur.com/a/xD2SIX3
I wouldn't plan on VUG being the best investment forever.

QQQ>VUG, they are differently weighted

You can check out some strategies at this website: https://bestfolio.app/leaderboard
With a fixed unleveraged buy-and-hold allocation the best risk adjusted returns (highest Sharpe) is the ‘Golden Ratio’ portfolio with CAGR 9,7%. Allocation to VUG, AVUV, VGLT, GLD, DBMF and BIL.
For a buy and hold strategy with leverage, the ‘Return Stacked Quartet’ is better with a CAGR 13,9%. Allocation to NTSX, GDE, RSST and ZROZ.
If you want to use different sleeves and indicators to allocate dynamically ‘Hybrid Asset Allocation’. There are different versions of it but the one with the best Sharpe gives 24,9% CAGR with max -27% drawdown with 52 years of data.
If low drawdown is your priority, ‘Defensive Asset Allocation’ may also be an option. It’s also a dynamic allocation strategy with CAGR 13% and max drawdown -16,6% (version with gold and managed futures).

VOO, VUG, and VXUS and chill.

VUG is hardly speculative junk lol

VUG is aggressive in the sense that it leans hard into large-cap growth, but most aggressive and best long-term expected return are not the same thing. A lot of people hear aggressive and just end up buying more of what already had the best run. Before picking the ETF, I would define whether you mean concentrated, volatile, factor-tilted, or just tech-heavy, because those lead to very different answers.

No. Despite great recent returns and "growth" in the name, VUG may have some of the lowest expected future long term returns! The exact opposite, small and value, has tended to over perform in the long run.
Factor investing starting points:
* https://www.investopedia.com/terms/f/factor-investing.asp
* https://www.fidelity.com/bin-public/060_www_fidelity_com/documents/fidelity/fidelity-overview-of-factor-investing.pdf (PDF)
* https://www.cbsnews.com/news/the-black-hole-of-investing/
* https://www.dimensional.com/ca-en/insights/when-its-value-versus-growth-history-is-on-values-side
* But be aware that factor premiums can take a while to show up: https://www.reddit.com/r/Bogleheads/comments/1hmbwuw/what_every_longterm_investor_should_know_about/ . Before it was deleted, it had this graph: https://www.bogleheads.org/forum/viewtopic.php?p=8693916&sid=ccebcb6bafc6ac9612472771c6770de3#p8693916
* And from GwenRoll: https://www.reddit.com/r/ETFs/comments/1krd3fe/growth_does_no_one_know_what_the_hell_it_means/
Then, don't forget about going global. US only isn't any more aggressive than a better globally diversified portfolio, in fact arguments can be made that the global is more aggressive (permanent: emerging markets may bring a risk premium, temporary: more favorable valuations may be found outside the US than in).

Is VUG the most aggressive ETF for my Roth?

VOO is up 54% on my Roth. The holdings I have above that is: AMD (182%), NVDA (83%), AVUV (55%), and special shoutout to FLR which is higher YTD but I haven’t had it for too long.
In my rollover i did all this at the same time and since that time VOO is up 3%. What I have higher than that is: AMD (153%), VUG (12%), FLR (18%), AMZ (23%).

Could go VUG / QQQM , I do, but I don't pay capital gains tax, so growth all the way.

I'm 55 and just retired and have started to slowly move stuff to VTI from VUG and VTG. Wouldn't be I VTI at your age.

Im doing the same with with my portfolio over the next several years. 90%VT/10%VUG is my plan.

My hope is that I can always rebalance. I’m hopeful that VUG outperforms VTI in the future like the previous

I agree with your dad, you should add a growth fund like VUG or qqq. But I don’t think you need to be investing every extra penny you have. I believe in making memories and having fun while you’re young, but DCA a consistent amount will pay huge dividends later.

VUG did add well

I would pick a US fund and an international fund as your core, and then pick something like SCHG or VUG. I wouldn’t bother with stuff like dram and qqqm. I personally hold some FBCG (etf version of FBGRX) in my Roth, but I don’t usually recommend it because of fees, but it historically has ripped.

Stick to SCHD 25% VYM 25% SCHG 15% VUG 15% VIG 10% VOO 5% JEPI 5%