Your decision to buy this game all comes down to your personal principles, and what they are worth to you. If playing games is like wiping your ass after you take a sh*t, then go buy the game and be done with it.
Why are people upset about COD5-MW2?
You should really watch this original
IW interview of COD4-MW (PC vs Console) which talks about what made the original Modern Warfare such a "great" game.
What is
IW's response to Modern Warfare 2 dedicated server petition?
If you combine the above two IW response together, IW is saying to MW2 PC Gamers: The game has become so great because we worked hard with pc gaming community, and now that we can take care ourselves we don't need you anymore."
So why can't we have both dedicated and matchmaking co-exist?
IW is like them communists. We can't have rich and poor people in the same room so lets take away all the rich people's "extra" money so everyone in the room can all have equal amounts of wealth. Wtf..?
If you had a chance to finish reading their Dedicated Server Petition response, IW is basically calling majority of their current PC platform customers(you) cheaters, pirates, money hungry server hosts, and unimportant pc gamers. If you agree with the above IW accusations, support a game that backstabs the people that made them possible, and buying a game with less options than its predecessor then go knock yourself out.