You could say that you are busy at work and there is a lot to do around the house. You could say that the hot weather and humidity are sucking your will to live. You could say that you are trying to finish knitting that baby blanket before your friend’s kid is too big to use it. You could say that you’d rather go to a baseball game or drink margaritas or meet friends for trivia night. Or you could just admit you’ve turned into an uninspired, lazy bastard and that this whole “keeping the blog updated” thing is hard.
It’s just a case of priorities. I see nothing wrong with yours.