[turkeybone]

Yes, when you're younger you (general you) typically are less risk-averse, so you can invest in these high risk high reward stocks.

That being said, whether it's TSLA or AAPL or some other "sure thing," exposing yourself to such a large amount of unsystematic risk isn't really wise. What if Elon Musk dies tomorrow? What if a plant catches on fire? Then your $4,000 could be decimated. Yes $4,000 will not mean much to you in 15 years, but compound interest average returns for 15 years hopefully should.

I love TSLA and I have money invested, but I don't think it's wise to be 100% in anything, no matter what it is.

[chatmasta]

$4,000 compounded at 5% interest in 15 years is $8,315. (Ignoring further additions to the IRA, since those are irrelevant to current decisions). $8,315 will be about as meaningless to me in 15 years as $4,000.