First of all sorry for my bad english, it's not my natvie language. I'm going to buy an iMac 27 inch in march. I'm going to use it for 4-5 years. Will it run without any problems for 4-5 years? How long will an iMac last?. Will programs and apps run on iMac after 4-5 years? Or should I get a Macbook Pro instead? I can't change my computer every 2-3 years if I buy an iMac, so will it still work smooth after 4-5 years. Thank you.