It is surprising how you get used to not having one. I think if we bought one then it would become a habit to use it all the time iykwim but we have never had one. We have a washing line rigged up indoors and even with the heating only on for a few hours in the morning and evening a load of washing will dry within 24 hours - some of the nappies take a little longer but I put them on the radiator hanger thing.
Roll on the summer though when we can hang it outside again

mmmmmm fresh air dried clothes

(and of course the sight of all those nappies blowing in the breeze!)