I saw raw squid once as a child. I swore there was no way I would ever eat that. But it turns out, calamari is pretty tasty.
Stupid analogy above, but you never know until you try something. Honestly, the back buttons aren't a big deal. You get used to them, and it does make the phone easier to hold as your not worrying about hitting buttons on the side. Plus the knock-knock power on feature is actually useful and you'd never even need to use the rear power button.
My biggest gripe with it so far is love/hate relationship with the software customizations. Some things are better than stock, other things are like WTF did you have to change that for. Unfortunately, you get this exact same scenario with Samsung, HTC and most Moto. Moto X has what I think the perfect software balance from what I've seen. Basically AOSP with a few useful tweaks. Too bad the hardware of the Moto X was beyond lackluster.
Years (many, many, many years) ago, I was buying a computer. At the time, I had a budget and had to make the choice between $300 extra for the 15" to 17" monitor, or that $300 for 8Mb of memory (yes, none of that was a typo).
I went with the rational that I could always add memory later, but can't add inches. (Waiting for BB to ROFL at that one

).
Same here. I can change software, but HW is fixed. So I tend to gravitate towards HW specs.