Is it wrong i walk around in my underwear ?

hey im a guy and im 17 and i walk around in my underwear when im home, like even when people are in like my family or when my mums or sisters friends are in or when my brothers girlfriend is inn ive even answered the door in my underwear before, my mum went ballistic when see heard that! is it really that wrong to do so because i enjoy it haha that sounds weird but i actually enjoy just relaxing in my underwear but if its that wrong, ill stop! what do you think ?