Personally I find it very boring and of no interest. From a health point of view, almost certainly more harm than good. Merely being in Spain will get your vitmin D sorted.
Having said all that, I'm not going to jump on a moral high horse, I have plenty of vices.
I really would cover up the area where the radiation entered your body, those cells got a lot of damage. So perhaps long shorts rather than Speedos.
Mind you if that really would spoil your holiday then take a chance, perhaps only a short time on day one to see if you are getting sun burnt and then ramp up if all OK. I can't see any point in denying pleasure, none of us have got a massive amount of time left: 20 years for us young ones if responding well 10 or even 5 years for those not so lucky.