I love sex with my girlfriend but I do it better on my own

You're not weird. She's probably not much into it. It's perfectly normal to masturbate yourself in this case or, if you can, in front of your wife. When my gf doesn't want to have sex I tell her, fine, but I'm gonna wank and you watch. Also, it's perfectly ok to have a mistress. Or find a woman to pay for sex. Or just go to a massage place where they offer massage with benefits. Lots of options. It's never too late to explore them. Actually, getting more sex will be good for your wife too. It'll improve your mood and hence your relationship (even if she never finds out why or how-- you don't have to tell her). Of course, stay safe.

Sometimes you just can't beat a good tommy tank

why do you stay with someone that doesnt put out?? you couldnt call that a happy marriage, why dont you find a mistress to take up the slack, *lix*

It's natural for humans to do not want to go into something that is too much labor and does not pay off. And if you have some easy alternative that gives you close enough satisfaction - you should be weird not to use it. I do not like eating fish if it has too many spines, and if I also have a chicken I would rather eat it than fish.

Depending on point of view you can be called unlucky or lazy, but hardly weird.