Why are you doing something you don't enjoy?
Some women are like that and cannot enjoy sex for fun or its own sake - for some women (and some men) the idea of sexual love is for ever intertwined with that of romantic love and one without the other is always going to be unsatisfactory!
Marj Proops used to say she received thousands of letters from women who had never experienced an orgasm but still had immense pleasure from "making love" with their "loving partners" and consequently never felt frustrated or cheated in any way...
I wonder if you have explored your sexual response yourself - by masturbating. Not many women obtain pleasure from sex if they aren't aroused before intercourse begins. There are a few lucky ones who do and it is this scenario that is the basis of many porn stories...
Porn does a lot of harm because it is not real and gives some people false information and expectations!
If you haven't learned how to turn yourself on and give yourself an orgasm you certainly won't be able to tell an inexperienced partner what to do to get you aroused and ready for sex...
For most men and women it is the foreplay that is at least as important as the sex itself and often the foreplay is more important, and for the woman, infinitely more satisfying!
I would hazard a guess that the biggest barrier to enjoying sex is your inexperience. When you have both learned how to get turned on and turn each other on you should discover a few orgasms happening quite naturally...
Certainly it is not a good idea to have intercourse before you are really panting for it - that is a turn-off!