Honestly, there are two valid answers to your question. This may not help at all, but I'll try to give them both.
1. No, you shouldn't. If you don't like something, you shouldn't try to force yourself into it. Reputation means very little when it's just you and your sillage; if you don't like the way you smell, then you're going to have a bad day. From what I know of you, you have great and adventurous tastes, and there are probably a dozen perfumes on your personal wish list that will satisfy you more than this name-based buy. Also, Mitsouko is a Guerlain, and like most Guerlains, the lower concentration is less likable than its more expensive friends - meaning that if you want to explore the perfume, it might be better to get a decant of EdP or parfum than a whole bottle of EdT.
2. Yes, you totally should! It's Mitsouko! Mitsouko EdT was a blind buy for me, and like you, I got it because of all the raves. I thought it smelled like bug spray, and my SO (whose highest compliment is "you smell like candy") hated it because it wasn't sweet at all. But I entered into a love affair with it, and there are weeks when it is all I will wear. (If I haven't posted on the SotD, just assume it's Mitsouko.) It's such a complex and unique fragrance that it can be off-putting at first, but having a bottle around can force you to try it again and again, and you may very well wind up an addict.