Translation of "nutteloos" into English

As julle iets nutteloos wil koop, moet my nie vra nie

If you want to buy something useless, don't ask me.

Maar om net vir jouself te lewe, is nutteloos.

But living just for yourself is in vain.

Maar as ek wag, besef ek hoe nutteloos my woorde sou gewees het.

But by waiting, I realize how pointless my words would have been.