Is a relationship good or not

I know its silly for me to think about it but I always get stressed about it so I made a pros and cons list.

Pros:
-someone always there for you (hopefully)
-get to go on cute dates
- (more nice things but they're pretty generic, nothing really unique about the pros tbh)

Cons:
-They might not always be there for me - cheating and having an affair exists
-what if they want to have kids bc I dont want them. Even if they dont want them at the start, they might change their mind and then loving them would have the biggest waste if time.
-what if they abuse me or if they dont treat me right after marriage like become lazy or uncaring.
-what if we have s3x and I get pregant? My life would be over

Thats pretty much the cons list but they are very important to me.