I can't say that I'm professional, but I'm doing pretty good at poker. I have some weird sense AND knowledge..
The main disadvantage and reason why I stopped playing poker is wasting time. Really.
I'm too scared to play high stakes at the moment (as you said), and if you aren't making serious cash from it, you could use that time to make something useful.
Poker is the same all the time, playing it for years over and over makes your brain kinda lazy. You aren't learning anything new from the thing you spend time the most.
I hope that makes sense
