We did a walking holiday in Majorca and I had the same problem. I always wear walking shoes in warmer weather - can't see the need for boots at all.
I have an older, leather Patagonia pair if it's likely to be muddy, and a pair of fabric Merrells (Moab ventilator) if it isn't. Don't worry too much about rain.
Sometimes you need protection from long grass and ticks, and shoes aren't much good in the snow as you get too much inside, but apart from that shoes are very often preferable to boots, in my opinion that is.