Yes. There are reasons why I want to keep it in vibrate instead of ringtone. At my work, I keep it in vibrate so that no one gets disturbed if I get a call or text. Specially in a meeting, I must put it in vibrate. When I have the phone kept on my desk in vibrate mode, I miss text or calls most of the time now. It never used to happen with my old iPhone 4s.
Also, I use my phone as a pager for my work and I want to keep it in vibrate in the night so that only I get up in the middle of the night when I get a page. I don't want to disturb others at home. I've been missing the pages now because the vibration is very mild and I don't hear even hear it. Again, I never used to miss the pages before on my iPhone 4s.