The BBC is considering making BBC3 available only via the iPlayer. No decision has been made yet and, even if it is, BBC3 will still be there if you've got a 'smart' TV (or if you simply view it on your home computer).
I like BBC3, they do a lot of comedy which I enjoy. I'm loving Ja'mie Private Schoolgirl at the mo. I hope they don't get rid of it. Now BBC4 I wouldn't miss.
Were it not all repeats I would too. Not all are rich enough to have smart TVs at all let alone the bedroom. And no intent to get a bedside PC. Maybe they'll consider. Moving programmes to other channels.