I agree, relying on it solely is just plain silly man, with ya on that.
Think of it this way though Teddy, I've got around 3000+ tunes all of which I feel to some degree, as I'm sure you do. MIK just points out the the ones which have matching keys, it does not select the said tune for me, I still choose it, it just narrows down the options. Say i get a list of like 100 tunes that match, I look down the list and look at each tune think about how it will sound and whether it will work and then give it a go.
Also at this point I may come across a track that I haven't span for ages, a track which would have been completely overlooked without this process. It could have been a track I've forgotten about or an oldy. Without this program this mix would not have happened. It certainly would not have happened if I would have sifted through 3000 vinyl. In that way I think it boosts creativity, there's no two ways about it.
When I used to mix on vinyl I probably had a max of 40 tunes in box and would mix between them. This program enables you to take full advantage of your entire music collection by pointing you in the right direction.
Ultimately you decide what you track to mix, it's not a finite solution, it's a tool.