Why are priests forced to remain celibate?

I mean in the orthodox religion you can even get married and it's not bad and we are born from sex and it's something natural and it's not bad, nor is it a sin and God is not disappointed in that.
but the catholic church is the only one that sees it as something bad because in the orthodox and in others the priests can get married.

some will remain celibate but I don't think all, others will have themselves castrated
Why are priests forced to remain celibate?
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