well...being the only child in the family aint a sin...maybe TS is just too sensitive...me being the youngest in the family owez get remarks such as "pampered"...but, infact, it's opposite...hahaha...im glad my parent's didn't pampered me with wealth or what so ever...instead they educate me well to face the reality...being mock by friends or foes is nothing la TS...just live your life...and don't have to lie...im proud being the youngest...coz...that's what i am...lying aint gonna solve your status...accept who you are...and what you are...then, all the noises around you will just fade away...masuk telinga kiri...keluar telinga kanan... be cool dude...ur acting like a spoiled kid by asking a Q..."is it a sin to be the only child in family?"...it's not us who should answer your Q...but, yourself...