Currently I'm using & enjoying both the HTC One & Galaxy S4. In addition I also use my iPhone 5. Not one to rely on others opinions & "facts", I'd rather buy the phones and live with them for a month or two, that's how I find out how well they fit my workflow, preferences & lifestyle.
Functionality is of greater importance that looks or materials since I use mine, not put them on display. Nor do I care what phone "I'm seen with".
Each of these three are excellent. People who trash iOS or Android do it to fill some insecurity or need to "belong" to a certain group. True enthusiasts don't need to trash the competition, nor make up stories about a phone they've never owned. Instead they enjoy discussing the various features & differences.
Apple is not going to kill off Samsung or Google, nor will they kill off Apple. Why people get so dramatic & go "Thermonuclear" like Jobs stated is nothing more than a display of unresolved conflict in their lives. It's also immature.
There's plenty of business for everyone, if the companies sales volume & profits matters enough to include in your decision making, then once again it's an emotional thing because none of that matters when it comes to where, why, and how one uses the product.
I had two phones before the iPhone & Android models were reality & I,ll continue to have two no matter what. That's what works for me, and that's all that matters.