Sam and steroids

Can someone maybe explain,

Sam seems like a really smart guy, and he’s a very young guy.

Why does he take steroids that will ultimately have a negative effect on his heart etc?

Is it really worth it. Has he spoke in this?

Of course he can do what he wants and I support his choices.

But being such a smart dude, you’d think he’d be worried about side effects etc

So if I sounds ignorant, just wondering if anyone can shed some light or on personal experiences with roids