Personally, I don't own solar panels, but would very much like to. And, the only con I can see may be the cost t purcahse and install them. I haven't heard that the environmental cost of manufacture outweighs the benefit. And, honestly, that doesn't sound plausible. The manufacture of something that produces no waste and harnesses nothing but the sun's energy has got to impact the environment much less than the clearing of ecosystems, the death of those organisisms within those systems, the degradation of soil and watersystems and the hacking of the earth to extract coal, which is then trasported using steam engines and trucks. Sorry, VerityG, this sounds like a rant! But I'm just thinking a comment like that must've been cookd up by somebody whose livelihood depends on the failure of solar panels.
Moreoever, if you produce enough energy, you can sell it back to the grid. So, while you may be 'forking out' a large sum of money at the beginning, you are very much investing in and for the long term.