I’ve been a bike commuter for about 20 years now. Not full time, but a few days a week most of the time, and my bike time has gotten more involved as I get older.
I believe that biking to work/school/errands will make you healthy, happy, less stressed, and more energized. This is all based on my personal experience, however. You may be a “different” type of person who finds it to make you sick, sad, and stressed out. You either need to give it more time (do it for 3 months), or perhaps you should just take the bus.
Either way works for me. Now I just need to figure out how I can manage to do this until I die. It’s that big a deal.