I can't convince you, but I can explain why I went for the 6: portability, and usability.
The main benefits of the 6 are a camera feature I don't use my camera enough to worry about, and a resolution that's undetectable to the eye.
The downside is far more tangible - you're hulking around an inconvenient brick. Yes you get the huge screen, but the 4.7 is a significant leap in itself, and the perfect stepping stone to going larger in the future, if that's what I end up deciding.
The 4.7 is also much easier to use, much easier to carry around, still a vast improvement in screen size and has a battery that holds up in the key areas (the Plus is only marginally better when it comes to browsing, and I plug it in every night anyway, so I don't need 80 hours of audio or 24 hours of talk).
Ultimately, it's down to personal preference - if the Plus works for you, it's the perfect phone to have. But it's certainly not objectively 'better'. The days that biggest were best are behind us now.