How do i accept that relationships may not be for me ?

I crave excitement and variety. I don't really like sleeping around though. I like for my sexual needs to get met even though people say it is not a "need". I feel like when you are with someone for a lot of years you get tired of dealing with the same old flaws, peoples smart ass mouths , the lack of sex that happens after a while , etc...and everything becomes boring and a lot of guys that I attract are too clingy. Yeah I know not all relationships are like this but I rarely meet couples that seem happy after many years and even the ones that do , won't admit that the sex life is no longer there. A relationship isn't all about sex but everything becomes a chore or boring after a while, outside of the bedroom.

I feel that most people who do stay together for life just stay out of convenience or because they want to use their partner so they can get taken care of when they are old, not love.

Plus I enjoy not having to answer to anyone or having someone try to control who I can be friends with.