A lot of people learn how to ride a bike as an adult, and it's arguably easier than learning as a kid!

Many parents start their kids off on training wheels but the thing is that's not really a good way to do it. I think it's better to just get a bike, and then walk around on it a bit, maybe coast a little and see how long you can stay upright just coasting; if you start to fall just put your foot down. Keep doing that until you can reliably balance, and only then start concerning yourself with pedaling.

I really think it'll be easier than you think and hanging out at a park screwing around on a bike for an afternoon could be fun. Plus, knowing how to ride a bike can never be a bad thing! You should do it if you want, don't be embarrassed to try!