I don't know what the magic income would be that "comfortably" supports the hobby, but I'll suggest it has a lot more to do with spending choices, including other obligations, than income.
Consider 2 guys. One single making $75K. The other making $150K, a big houseful of kids...guess who has more playtime money?
Or give up golf....that is a bunch of good sessions right there
![Wink](http://www.eccie.net/images/smilies/wink.gif)
Or what about the guy that makes really good coin but all on a w-2 and has a wifey that watches the family finances like a hawk?
Or the real
![Death](images/smilies/modern/death.gif)
![Death](images/smilies/modern/death.gif)
![Death](images/smilies/modern/death.gif)