There's a couple of reasons.
Firstly, work is busy. I started in a new team a few months ago and I am doing more of the stuff I'm really interested in. I'm starting work earlier, sometimes finishing later, and I have no time in the middle of the day like I used to.
Secondly, I'm enjoying my leisure time. I've started taping a bunch of shows on the media PC and I like to watch then between work and martial arts, or work and the gym, while I get the birdie boys out of the cage for a stretch. This gives me only enough freedom for a quick FB chat, then the computer is off and I'm out of the house again.
Thirdly, a lot of the time on the computer is spent reading a lot of different blogs, but a lot of wedding blogs. I am researching and saving and thinking a whole bunch of wedding stuff, and I don't have much room left in my brain for thinking up stuff for my own.
Fourthly, the stuff that I do write is mostly read by a small bunch of people, most of who I have on FB and keep in touch with anyway. I've noticed it more lately, but I feel like I'm talking to an empty room. The more I sense that, the less I feel like participating, then the more you sense that, and the less you feel like participating - it's a vicious circle.
Plus I could just be getting too old for this. I remember reading a lot of blogs when I first started reading them, a lot of them were in their late 20s at the time, and very few of them are still around here. Perhaps it's just my time.
To be continued...?