Is it worth it to buy Call of Duty Modern Warfare 2 for Xbox?

I played modern warfare 2 a ton after it came out in 2009. It is still worth it to play multiplayer in 2013? I still play Call of Duty 4 on Xbox live and never encountered many modders. My disc cracked last year and I have always debated whether or not to replace it. Does anyone think it is worth it?