I care because I hate tags and have hated them since this whole concept was created.
I'm just looking for something to bitch about.
Well the tags aren't going away, so why not help out instead? If you see tags you want to remove just provide as many relevant tags as you can. With the energy you spent complaining about them you could have removed more than 25% of them.
In the future it will be even easier for the relevant tags to win. We'll do things like increase the weight of tags that are represented in the text (e.g. if the topic title says "Obama wins election" the tags "election" and "Obama" can be given more weight than "tiny penis" which is not in the topic text), filter tags from users who don't tend to add relevant ones, weight the topic author's tags more heavily than others etc.
But we aren't getting rid of tags, tagging allows the users to have more say, and to help out more with the site's categorization. A lot of different kinds of topics are being posted that we had no forums for before, and this all will grow naturally with the site instead of require administrators and moderators to do it all.
In the past, some users didn't like the way forums were categorized, where their topics were moved, or that there were no forums for a bunch of things they wanted to talk about. There are a lot of downsides that are solved by this kind of categorization, but most of all we need the users to help out and do some of the work. We can't rely on a handful of volunteers to do it all for us and we need ways that the categorization process can scale with the use of the site.
So if you don't like any tags please help out and give more good ones. You won't get far trying to change what others do, but you can neutralize it by your own positive tagging and we'll keep tweaking the feature to emphasize positive uses.