I can answer truthfully here.
There are a lot of reasons. But honestly, it's sort of amazing that I've ever done it at all. I'm not a particularly social person. I don't have other people over to my house very often. The entire process from announcing to encouraging people to attend to getting my house ready waiting for people to get here and ultimately waiting for them to leave is emotionally exhausting for me. But I love poker. And I'm probably kind of weird because although I really like the game of poker what I really like is the aesthetics of poker. The way it feels, the way it sounds, the way people behave at the poker table. In particular I have always been very into playing cards. But at a pretty young age, maybe as late as 9 years old, I declared out loud that one day I would own "real" poker chips. So, one day I had the money to buy them, so I did. Having the poker chips, a new house with an unfinished basement and a few hundred poker tournaments that I organized under my belt I wanted to hold onto the experience I had playing poker with my shipmates while underway.
Long story short. I can't have that experience anymore. I have been very satisfied with the poker games I've hosted for the most part. But there's something missing from the experience. And it's not awesome people, because I've met many really great people from Jazzfanz and elsewhere hosting poker tournaments. It's that I can host and enjoy that, but I can't host and play and enjoy the playing part. I'm too stressed out, I'm too focused on the overall game to pay the right amount of attention to my game. So it's frustrating.
Honestly, if I felt like there was a good way for me to host underground poker games I'd probably do it. But I'm just not set up for that sort of thing. My neighbors wouldn't approve. My families security would be compromised. And if the cops showed up I'd lose everything. So, it's not an option.
One day I'll be fondling my poker chips and decide that I need to host another game. But it's emotionally taxing for me and I decided that I needed to take a nice long break from it for a while. So that's what I'm doing.