Have two friends who live on them and I hire barges regularly, had one out on Saturday, Skipton to Gargrave from
Pennine Cruisers, be sure to holiday in one.
GRP cruisers can provide more economical space with mooring charged by length.
Narrowboats hold value better.
Widebeams can't utilise all the network.
All are depreciating assets.
Insulated properly, none should be difficult to heat.
Cheap living if you are a continuous cruiser.
My friends both bought theirs after marriage splits, it was a boat, a caravan or mortaging at 50+ for a tiddly terrace. Both love the boat life and live near the 5 rise locks at Bingley, permantly moored. I visit often and think it's like living in a corridor, narrowboats send me bonkers on a day trip, where would I put all my shoes? Never mind bikes!
I could live on widebeam though and MrsF and I have done a lot of costing for a marina mooring near to Leeds centre but we wouldn't expect to have significantly reduced living costs, if any at all.