Time control with no limits. Think about it. If you were immortal, you might be able to do more as time keeps going and wouldn't get old and wrinkly, but what if you ended up just begging sick of life going and going and going? Plus, if you made any friends, they'd always die and you'd have to make new ones. With time control, you can stay in one place for as long as you want, and keep living over and over but you can choose when to stop once you're sick of reliving one period of time.
what's the most embarrassing thing you've overheard one of your parents say? (this doesn't include dark secrets like your mom talking on the phone and saying, "we're getting divorced" when she hasn't told you yet, but rather the sexual, creepy, and plain bizarre you can't believe came out of your parent's mouth and changed your life forever)