Macs are really good computers; I'd say the value you get from a Macbook Pro is comparable to what you'd get from a good PC of similar specs. However, if you don't need the power of a Macbook pro (gaming, video/audio editing, other computationally intensive tasks), don't get one! You could save $800 and get a laptop that's very well suited towards your needs.
If I had to make an out-of-the-box suggestion, it would be to get a chromebook. If you have any comfort with computers at all, you can pick up a chromebook for $300 and install ubuntu as detailed here [http://chromeos-cr48.blogspot.ca/]. I bought a chromebook a while back to use as a more portable laptop to bring around for everyday use. It costed me $170, weighs about a kilo, and is able to handle youtube, music playing, word processing, and more. I got a not so top of the line Acer 720 model, but if you can pick up one with an SSD (which is basically every chromebook,) you'll get a machine that boots up in seconds, and has a battery life of 6 hours +. I mostly use it to bring to school; I can barely feel it in my bag, and I never have to worry about charging between lectures.
I think the point is figuring out what you need out of your computer. I have a second generation Macbook Pro with a 2.4 Ghz Intel Dual-Core Processor and 4 gigs of RAM. I do reasonably intense scientific computation and play FPSes on it, and I rarely experience any performance issues. If you're not planning on playing games (or at least not playing processor-intensive games), you really don't need anything more than that, which is around $400 in modern laptop terms. My chromebook has a 1.1 Ghz Dual-Core Intel Processor and 2 GB RAM, and I've never experienced any performance issues, even with a dozen internet tabs open while running a numerical analysis program.