Not everything in this world is to do with money, and some people would rather retire or relocate now rather than wait until the Daily Mail says that it is safe to do so.
Spain is a lot nicer place to live than England. By all means, take the plunge and move now. You will, with what you know now, almost certainly buy a decent house without issues or problems. Go for it.
However, it is also true that we haven’t hit bottom, that there are a lot more mayors, promoters, lawyers (one can dream) and pols who will have their wings clipped before this whole thing is over.
So, to invest – buy gold or tins of baked beans. To improve your standard of living – buy a house in Spain.