This is the bike that I used to get back into cycling after 25 yrs of "living life". Most on the forum probably don't recognize it. An early '70's Peugeot UO-8, the basic 10-speed that started many a newbie cyclists on their journey into cycling.

Joined in on many a weekend group rides and got dropped till I "found my legs". Its only limitations were my limitations. At 20-22mph I could cruise along just fine. At 25mph I was hurting but could hold on. Above 25mph...I really have no desire to go that fast or the time to invest to aquire that sort of fitness.
ITs not about the bike.