This does not feel that crazy to me, but people IRL keep telling me it is, lol.
I'm 8ish months pregnant, and instead of mailing thank you cards to the people in the neighborhood who gave us gifts for our recent baby shower, I rode my bike around and hand delivered them instead. I saved us like $8 in stamps and got some nice and easy exercise. Walking is hard for me at this point, but biking still feels pretty dang good.
Plus, I got to enjoy a nice 40 minutes of leisurely pedaling through our neighborhood, which has a lot of older houses with lots of character. I love walking/biking through our neighborhood, and I felt awesome after I did it! Even though I was tired and tempted to just mail them out of the sheer convenience, I'm glad I didn't. The idea of mailing a letter to people that live literally across the street is so stupid to me, lol.
EDIT: I also rode my bike to and from work when I went in a few weeks ago. It's about 6 miles each way, but mostly downhill/flat on the way there. People were very surprised, lol. I did end up strategically taking public transit part way home so I could very easily just basically coast all the way back (didn't want to overdo it), but I still felt pretty proud. I love biking to work, and telling myself I could bike in was actually the way that I bribed myself to actually go to the office instead of working at home, lol.