For me, the reason I mainly use Apple's products over Google are the differences between Google's and Apple's business strategies. We are not Googles Customers, we are a product to them. They track our usage and our habits in order to sell advertisements. Thats why they give everything away. The truth is they dont really care about you, they care about their advertisers. Thats where their business comes from. Thats why they push out a product go get users and often abandon them. And thats fine, its their business model. I use their search and I use gmail for my non-personal mail. Their search is by far the best out there, and Gmail is not horrible. But look other products; Google Plus, google wave, froogle, coupons, iGoogle (which they are killing off). Even Android; According to Google's own statistics, close to 90% of android users arent even on Ice Cream Sandwich, and they just pushed out Jelly Bean. With Apple on the other hand, WE are their customers, thats why we pay for what we use, and they look to make sure we have a great product. They may not always accomplish that, but at least I feel they care (somewhat) about me and my apple products.
Apple customers are the people who buy their products, Googles are the advertisers, not you.