Ha ha...
It's hard to explain... it's a form of escape I guess... you are able to explore "virtual worlds", especially with the newer technology available... also in some genres you can do things you can't ordinarially do, like become Batman, Superman, Spider-Man, James Bond, etc. Then you can DO the things they do, like swing on a web, fly, etc...
There is a fine line between enjoying the escape every now and then and being obsessed. I know I enjoy the games, I admit I CAN be obsessed in a way (moreso in the past) but try to keep it in balance.
Why, yesterday I was at Luke's place and brought my Dreamcast over... we played for about 2 hours... it was fun, but after awhile went outside to hang out and get fresh air.
ahhhhh superman...