I have mentioned before that I play Lexulous for a variety of reasons. I like the challenge of playing, making new friends, new contacts and having interesting conversation with interesting people. I play for all of those reasons.
But sometimes, as in life, there is no point. You just play to have fun. You just don't feel like working and you need to pass the time with something light, to take your mind off of things.
Sometimes as adults we forget what we learned as children. Fun is just fun and we need it. When we forget that, we are reminded of it when we get it back.