On my way to work today I saw a guy pushing his bike in the Park due to a flat. He was probably 30 mins of walking distance away from home. I helped him fix the the flat but he didn't have anything with him (no tubes, pump, etc.) I ended up giving him my tube and used a CO2 cartridge to help him out. It was a new rider mistake for not being prepared.

My question is: Do you tend to not carry anything if you are just doing a quick lap near your home?