There are things in the bedroom I love but would happily give up if my partner wasn't into it.
I generally agree with you, you have to be willing to meet you partner's sexual needs. However, the goal can't be 100% fulfillment. That is unrealistic and even if you could fulfill them 100% it is highly doubtful you have the same proclivities and thus would be less than 100% fulfilled.
The aim is to be over all satisfied. Which means doing things in bed you rather wouldn't. That means jerking off to a particular fantasy rather than have your partner do it. And people can be overwhelmingly satisfied doing this.
There are those who will never be satisfied with monogamy. And of course there are those who will never be satisfied with anything else. But, if roving eyes piss you off, chances are you wont be happy with anything.