Talk about making a hen out of a feather.
People haggle. They're trying to convince you your bike isn't worth much. What they actually think it's worth is impossible to know. They may not even a have a notion of that themselves and are just looking for a bargain.
In other words, they are exactly the person everyone here finds virtuous: who shops for used, waits patiently, makes offers, buys something a few years old to save a buck, etc etc. The rest is in your mind.