It's always so hard to say no to anything that is currently a responsibility in life. Even with much smaller things like participation in various Steem initiatives, when I have to cut something out, it's excruciating before I do it.
Congratulations though dude! I've been following your blog for a year now and I was wondering when you'd go full-time. Makes total sense to me and Steem is lucky to have all of your energy now.
A year already :) And thanks, man! Glad to read I'm not the only one that has this feel.