I would never purchase a house that did not get some sunlight if there was a choice. Sometimes if you are in the middle of a housing estate you have to take what you get but if you are buying in the countryside then I think it has to be one of the most important things.
I live in a town but had an empty site beside me until recently, I had great sunlight in the house, sun shining in kitchen windows in the morning but a new house has been built beside me which blocks that out and I really see a difference, not as welcoming and warm without the sunshine.
Another point, dont know whether you are a gardener or not but you will be ate with midges from early evening, a relative of mine has a lovely garden but has a lot of trees around it, cannot stay out to garden or even sit there in summer (if we get a fine day) due to the bugs.