Until late 2015 I had never had any form of dryer. Washing went on the line in summer but mostly dried on a clothes horse in the kitchen.
Then we spent ££££s having the kitchen/utility redone and as part of that we bought a washer/dryer which went in the utility. Basically I didn't want my lovely new kitchen spoiled by still having washing about.
Anyway, within the first year the dryer developed a fault which got fixed under guarantee.
Last week the same fault re-occurred. It is now out of guarantee so the guy who came out charged us £120+ to fix it. Except it hasn't fixed it as the very first load that we put through failed on the drying cycle with the same error code 
Furthermore the guy who came out told DH that he thought washer / dryers were a bad idea as thy had two different functions and were never going to work well in the same machine.
Well we haven't room for two machines and I am not having the kitchen changed again. But I do like having a dryer (when it works). But I am interested to hear other people's experiences with washer / dryers to see if there is anything in what he said or have we just been unlucky and picked a rubbish model.