Not taboo, nowadays it is even wise with all the STDs and AIDS. The less partners the better.

Though I'd recommend against waiting for a virgin to "start". They are a rarity nowadays so you may look for a looong time And when you find her / him you will have to marry the virgin. Don't even think of getting "it" then breaking up later. It is the cruelest thing ever to do to someone who reserved their first time for YOU. Only jerks do it.