my mom ask why

This afternoon my mom ask me why our computer cannot chat directly face to face during online.This quetion i had explain many times already but yet she ask again.I had explain that i do not have a web cam with my computer.For that we need to buy and set up that equipment.And there's no point for me to have it.I do not need it so.I can chat online with my friend is already enough.Not needed to chat face to face with my friend.Some more not so nice to do so because i don't want my friends to know how my house look like and i'm not interest to know how my friends house look like.And i ask her back why she ask so for this time and i ask is that she wish to chat online with her sister or what.She just answer me "is not.I'm thinking when you go for your higher level study in outstation or oversea i still can look at your face online everyday".And i reply her when reach that time we get a GPRS handphone then okey already.No need to be that troublesome.