This heavily depends on how the companies you are investing in perform in the mid-term. It is true that the stock market out performs other kind of investments but this is only true if you are not investing in let's say 2-3 companies but rather in an index or something similar. Investing in an index is much much less exciting than investing in 2-3 companies.
This is so true and I am glad that I am not the only one who thinks that way. In addition to that one could argue that investing in stocks (whatever the industry may be you are investing in) is a bad thing if you are not an insider. My brother who is a hacker and economist at the same time showed me studies that determined/proofed that the stock market is very irrational (I mean we all knew that but those studies showed this with scientific methods). I will ask him about those studies again - may be interesting to others as well.
"I am depressed and I need someone to talk to" https://news.ycombinator.com/item?id=4928031
and
"Thank you HN, sorry HN" https://news.ycombinator.com/item?id=5348589
Thanks again. I am fine now.