you know how many men have fallen asleep on me before I was satisfied? women need to be satisfied too
You do realize how often women face the same issue, right? It's not fair for either partner to be left out, and often women get the short end of that particular stick. So it's not as though OP is in a one-sided situation.
And as another commenter has stated, nobody has to service anybody else. Strong relationships often involve that, yes, but it's not a requirement, nor should it be treated like one.
In short, please take your narrow-minded bs
Time for a little self-care
If either of you only try to initiate sex when you've gone to bed for the night and are already tired, maybe a long weekend or holiday together would help with more opportunities to snuggle up. And if it doesn't help maybe it would be a good time to discuss your problems without her using tiredness as an excuse, maybe there's something stressing her out and she needs time to talk it through with you.
There's always Dr Ruth.
I'm not sure how it works, exactly, but I think you're supposed to close your eyes and think about Dr Ruth until you're horny...
Tell her to spread 'em or you'll find someone that will!
At least she didn't use a funny voice.