Is 15 minutes too long for a shower ?

I'm amazed how people are done in 5 minutes. I feel like they rushed just to get over it and didn't actually wash well. My shower is 25 minutes most times.

Nope, unless you are shaving, exfoliating and doing other such. 

Not at all! I took a Minimum of 15 minutes and a maximum of 30 minutes.

No For me 15 Minutes is about average I shave in the shower and wash my Hair every day

Five minutes for me, including toweling off.

There's a funny Seinfeld episode about this topic. Kramer can't understand how people can shower so quickly, so he goes down to the Y and takes notes while watching guys in the shower room. He gets beat up in the process.

Seinfeld - Kramer takes shower notes at YMCA

No but thirty minutes is.

nah that's fine, mine generally take about that long since I have long hair, use shampoo and conditioner then exfoliate etc etc. Just try not to have the water too hot for long showers, since it can dry out your skin

Not if your doing everything you should be.

Yeah, I’d cut down to at least ten mins when showering in hot/super warm water. Too long and it’ll strip the natural oils in your skin leaving you with dryer and irritated  skin 

There is nothing fixed. Taking time as you want or as you feel comfort should be the right timing, it could be 5 miniute or could be 50 minute ,whatever....

It depends on how much time you have to shower per day. In summer, you might have two or three times a day. You may only need to wash the sweat off your body sometimes. If two in a week, half an hour is more probably.