Why is it that it's always 1 out of 4 bolts has to be a pain in the ***?

Quit whining, If you do it ,for a for a living, your gonna live this nightmare, 10-12 times a day......
Not whining, just lightheartedly venting. In a way, it'd be easier if they were all a pita... just seems it's always the last one, which ever way way you do it, that seems to be stubborn. It goes with the territory working on 50 year old rusty stuff.. it's actually gone better than I thought it would.