You can just let your followers do the lockpicking for you.. and the perktree of lockpicking is indeed worthless.
I'll have to try that. I did Thieves' Guild and BD early in my game before I had any followers. Now, if I have to do something that they may not morally approve of, I ask them to wait outside.

I only recently spent the perk points in the Lockpicking tree because I wanted to have a non-breakable lockpick for jail-time.

