I'm not sure if you gave up cycling that he would be satisfied. And how would you feel?

Although like others mentioned, there are two sides of the story, I cannot IMAGINE poo pooing that which makes my DH as excited as he gets about his crazy riding. He thinks 200k every saturday would be heaven. I think it's obsession. He wants to retire and take 6 months and ride across the USA. I say more power to him...
He loves the idea (of riding across the USA) and he's happy about it so I will support him.
Once or twice a year he does this 24 hour bike ride. I really hate this, it scares me to death. But I support it, because it's what he loves.

What kind of person would make their partner give up that which they love?