I am 69 years old. My bike is 50 years old.
I need new spd shoes and the tires need air.
Last year, I had three surgeries, thatś both hips and a pacemaker.
I expect to get back on the bike after a two-year layoff.

For a time, my average daily commute was 28 miles/day. 4500 miles in 10 months (in my 50ś)
For a 12 mile roundtrip commute, any bike will do.

Find a local bike shop (LBS) that makes you feel welcome and takes your questions seriously.
Explain what you plan to do with the bike and go from there.

fat biker