In a word: Yes.
In a few more words, Yes... yes I would.
I wouldn't even think twice about it. For me, there's absolutely no dilemma involved in this situation. For one, I harbor no deluded concept of the sanctity of life. I don't give a damn who lives or dies, unless I happen to be particularly fond of that person. There are decidedly few people I am at all fond of, too, which means that the field is wide open with prey.
Secondly, with telekinetic powers... there's no worry of getting caught. I'd just spend a few months learning how to fire a gun with my mind, or strangle someone, or hang them, or electrocute them from across the alley... and then I'd go to work. Best part of that is that there's no fingerprints or evidence, so it's not like I'd have to worry about getting arrested and tossed in prison like so many other folks.
So in the end, it really just comes down to "What would I do with that kind of time?"
Easy enough to answer: Whatever I Damn Well Please.
I mean, I could spend a few centuries as a local deity... read every book ever written... take long naps in the shade down by the lake. I could take a couple hundred million years to explore the Universe... map it all out... learn what makes it tick.
Of course, to do that I'd need to keep a supply of humans with me, so maybe I'd off a few old rich guys and use their money to invest in the Space Program. Fund some colonization missions, once we get the whole 'growing an atmosphere' and 'terraforming' things down, just to maximize the potential worlds we could inhabit.
I'd go on like that for a while, I'm sure, but eventually it might get a little dull.
When that happens, I figure I'll just start teaching myself genetics and biology and some ecology and the like... maybe seed my own world and watch it for a billion years or so as life grows on it. Observe them, see what makes 'em tick.
And whenever that gets dull, I'll just go back to taking long naps and lounging around contentedly.