No, the only time he really likes it is to get free food or ice cream. Most the time he just uses it as a tool. Since he's actually a guy, having other males long for him and actively pursue him disgusts him. He usually resolves this with violence or finding some hot liquid as soon as he can. He also hates wearing girl clothes, and I felt bad for him when Nabiki and Kasumi to wear girl clothes because there wasn't any hot water and Ranma didn't have any clean clothes. I think that was kinda mean, surely they could of found a gi top from their dad or something for ranma to wear until the laundry was done. Having a curse like that could be very traumatic and forcing someone to accept things like that before they were ready is kinda insensitive.
But my answer is NO, ranma doesn't enjoy being a girl often. He just runs into a lot of cold water accidents. I mean since it IS a water curse its bound to attract water, right? Especially at some of the most inconvenient moments.
In addition, if he liked being a girl, why search for a cure?