Yeah, MOBAs are just intense. I have gone back a few times, but it is just too much. I have played other games competitively at a high level, but MOBAs are on another level.
And it was like that way back in the day, even when it was just a custom map on WC. I used to love playing custom map games, things like Snipers, RPGs, Tower Defense, and such. I had been away for a bit, came back and like 90% of the custom games were DOTA. I joined a game, got kicked for having to download the map. Went and DL'd the map from a website, got into a game, and when it started I said "This is my first game, any tips?" and everyone just immediately quit lol. That was probably 2004.