Forgive me if this is a contagiously stupid thing to ask, but I'm just starting to educate myself on matters of investing. I've spent weeks poring through JLCollinsNH and MMM, and thanks to their abilities to explain things to those of us educated in fields other than business, I'm starting to get really interested in setting myself up for the best possible future (early retirement maybe??)
The simple approaches to investing appropriate for a mid-20s guy like me with not much financial knowledge (yet!) goes on the supposition that index funds are fantastic, because effectively the market will always go up, overall. I understand everything I've read on this. Sometimes it's low, but in the long run, it'll always get higher. And I've seen the graphics of the DJIA since it's inception being an impressive line that jaggedly shoots relentlessly up and up. All this is why I plan on throwing 10K into VTSAX and getting that ball rolling as soon as I'm back in the USA. (I live abroad currently and have about 15K to my name)
But here's my question: Is it theoretically (or perhaps, a better word to use would be "practically") possible for the market to not go up?
Is there any realistic chance for a 20-30 year stint in VTSAX, with regular contributions and riding out the storms, to result negatively? I don't mean me losing nerve and selling during a low point-- I know better than that and have the luxury of time to wait things out. Rather, I mean for the market to drop and stay fluctuating around a lower point long-term.
Appreciate it, folks. You're helping to educate a very enthusiastic newbie!