What amount of bitcoin is considered decent really depends on your personal situation.  Someone living in a developing country may feel pretty good about having just 0.1 BTC, while that might not seem like much to someone used to a high standard of living.  I'd say 0.1 is a fair start if you're new to crypto, but hardcore bitcoiners probably won't be satisfied until they've got a full coin or more.  Me, I'd be pretty jazzed to have just a few bitcoins but I know people with much bigger goals than that.  It all comes down to what you're aiming for!  Just getting some bitcoin at all means you're ahead of most people out there who still don't really understand crypto.  But sure, 0.1 is a solid foundation to build from if you want to keep accumulating.