I think you should try a bimodal approach.

By all means, continue learning how to enjoy yourself alone, and stop feeling like you "should" be more like everyone else. That's actually healthy.

At the same time, though, consider the possibility that there may be more for you outside your house, and you just haven't found it yet. You don't have to force yourself to be social, but try different things that sound like they might be appealing to you.

It doesn't have to be either/or. Keep enjoying your solitude, but budget a small amount of your energy to exploring in case it unexpectedly pays off.