You really need to spice up your life... Go to the dessert, do some 'safe' drugs, (aka, mushrooms)..., get a mistress.... get a motorcycle (and be safe about it), buy one of those trycycle open air cars and ride the coast, start playing some social sports seriously, (volleyball/soccer) etc... etc...
It is up to you what you think you like, but often you never know until you try it. The fact that you are not happy, means you are getting a mini burn out from being so 'square' all your life. Time to rebel a bit, just don't throw the baby with the bathwater, (aka, don't destroy the good stuff in your life, just incorporate some more risky fun)