I'll chuck in my $0.02 here I think, as good a place as any.
I am not opposed to microtransactions as a whole. However there are definitely limitations. Putting them in a full-priced game? No thanks, I've already given you money for the game, why should I need to spend more? Putting them in something free? That makes sense. However if it is "pay to win", for example something that you have to pay for (or requires an insane amount of gameplay to unlock) that will give you an unfair edge, then no thanks. Cosmetic changes I think are great in terms of this. Look at League of Legends. Sure they have champions you can buy, but a large majority is cosmetic. And that's fine. I'd pay for a different skin, if I thought it was worth the price.
On DLC, which I regard as more than just mere microtransactions - I'm fine with it. If the developer wants to make extra content for a game I liked, that's great, and I'll happily pay if I feel like it's worth my time and money. If you think an alternate costume for your preferred character in a fighting game is worth it then go ahead. But when it's on-disk, or planned (I mean properly, not just "Oh we'll do some DLC later") well before release, then again, no thanks, that's just shitty. Don't do that.
I don't know how well I've conveyed my thoughts here, but hopefully somebody finds them interesting.