I was searching over the internet why people use mac so thought I should ask those who have purchased it.
The alternative is generally considered to be Windows, which has always sucked because Microsoft doesn't know how to make quality software. Apple has always had a knack for building good user experiences and I believe OS X has a solid foundation while Windows seems to be built of spaghetti code.
MS can make a good version of Windows. I do agree though that the base of OS X is more solid, although MS have certainly upped their game. The gap is probably the smallest it has ever been.
The user interface. That's all it comes down to for me.