bad habit

i dunno whether to classify this as a bad habit or just attentive. but it seems that i'll either purposely or in most cases un-intentionally "eavesdrop" on other ppl 's conversation.

esp on public transport, but i must first clarify that usually when ppl discuss things on a bus, train, or in queue, they just happen to discuss it at a volume that i can hear clearly.

i find out a lot of stuff that i dun wanna know:
someone who stays in Bishan whining abt the long journey here, speaking to another guy staying in bedok.
gal A gossiping to gal B abt who n who,
plus countless others....