Why is receiving pleasure a sin?

In Christianity pleasure is seen as a sin, but you only exist on this earth to serve, is it not? It's your purpose to serve the church, the patriarchy, and men. How is it a sin to receive pleasure in a way, but to serve such a repressive system is not a sin? It seems to be so heavily ingrained in our society to the point that even women believe pleasure is a sin. Women will even work a 9-5 job from home and on top of that clean and cook and do laundry and childcare without receiving pleasure, let alone being wanted. It's okay to go through life doing what is expected of you without receiving any pleasure in return, and if you do receive any pleasure you are punished for it. This is entirely a patriarchal idea. Women, let's stand up for ourselves and say no more to this repressive system and take our pleasure back!