Thing with any power is that it has to incorporate some manner if protecting you from capture or assassination. Because people and governments will capture you or kill you. Someone will want it or hate you, and that will keep happening.
So whatever power you have has to incorporate a fantastic defence mechanism. If you only have one power, that's a difficult choice. Teleportation doesn't defend you against a bullet, and immortality doesn't make an underground cell go away.
That's why I went with luck. The bullet would miss me, the cell door would be left unlocked, etc. Plus I'd be rich.
I'm flagging this post as NOT HANDY

(and yes, I realize I will be fed to the board-piranhas for disagreeing with the uber-mod; I plan to be devoured with dignity, and possibly whatever condiments piranhas enjoy most)
Anyway, as I was saying: Defence is great, but is it really "handy". I mean, it is handy, but it's one aspect of it. By that token you could say that someone who has a healing factor has a handy power BUT this is only if that person is constantly getting shot at. A workaday joe could go their entire life without even learning they had a healing factor until some time passed and they just, y'know, didn't die.
In theory I meant if you were, you know, a totally normal person kinda handy. Even in a super world, a handy power isn't so much a life-saver as much as it is... just, y'know, handy.
Luck would be handy, and it would be a great defence, but I'm not certain the two aspects are usually the same thing.
The ability to unfailingly open sealed things = handy. Why? Yes, there's the odd door, but more importantly you would be the uber-husband. Not a jar would stand against you, nor bottle cap, nothing.