Do you ride a singlespeed bike? If you do, what do you like or don't like about it?

I saw the comment (on the singlespeed forum. ), that geared bikes are for people over 45. Guess that means for anyone over 50, they shouldn't be riding singlespeed bikes. I'm certain nobody here will agree with that comment.

My story..... started commuting more seriously since August. The bike is an older Diamondback MTB with a triple chainring, 6 speed cassette and 26 x 1.5 road tires. The bike has never fit well, it's tall with a short top tube, kinda strange by today's standards.

This got me thinking about N+1 and a possible replacement. I automatically assumed, a new bike, would be geared with a 10 speed cassette and drop bars. Now after reading more about fixed and singlespeed bikes, I'm wondering if this type of bike would work for me.

My commute is 29 miles round trip over mostly flat roads. The roads are open, which means the winds can get intense. The other day, I had to ride in 32 mph gust, leaning the bike into the wind to stay upright.

On the current bike, I'm in the 48 tooth chainring and either a 17 or 20 tooth cog 99% of the time. I don't have cadence on the MTB, but would guess I usually ride at 80 - 95 rpm's.

A singlespeed would cost less, reduce cost of replacement parts and requires less maintenance.

What do you think, is this a good or bad idea?