Everyone I know who has voted tory (and admitted to it) was because they think they are better off after the last few years than they were before, so from my small sample it does appear to be very much about self interest rather than overall vision for the countries future.
That is not to say I think labour were the perfect answer, they are just a tory-lite party these days, if you look at the SNP who openly oppose lots of things labour pretend they don’t and see how well it worked for them this shows a lot.