I will be getting a Macbook soon as I will be going to college next year, which will be a great switch from my 4 year old POS dell desktop. I am pretty sure I am going to get the blackbook and buy 4GB RAM seperately after I work for some more money, since I will have to work all winter to save up enough. But I am wondering, how long do your Macbooks last? My brother has a dell that is barely 3 years old and is just about to die. If I am going to spend $1700+ on a computer, I want it to at least get me through college. How many years do you think this will last, spending a little on upgrading along the way?