The point is, Apple has always been a company that thinks of the big picture and not the small market of people. Most people put their phone in their pocket and having the headphone jack on the bottom makes it easiest to pull out of your pocket and not fray the headphone cable.
If you want something to satisfy your needs get a different phone. Apple cares to the majority.
The majority that owned the first five generations are different from the majority now? Disagree all you want (that's ok) but "most people agree" seems like a wrong statement, and an excuse.