Leyrann
Deity
I've got to comment on this point, since I live next to a number of volcanoes (Mount Rainier, Mount Baker, Mount St Helens). Volcanic ash is a fertilizer (in moderation - a foot-thick layer from Thera doesn't help a bit!), so that generally, land around the volcano is more productive. Volcanoes provide access to tephra, which makes cement/concrete, an exclusive building material for structures (Roman harbors, aqueducts, roads) and Wonders (the Pantheon's dome) and obsidian, a substitute for bronze or copper as a tool/weapon material. Just as important, almost all volcanoes have a religious/cultural influence on the people living near them. Look at Fujiyama, or Olympus and Ida in Greece/Crete - for that matter, count up the number of Natural Wonders in Civ V that were volcanoes - no other natural feature was so heavily represented.
In short, there are a number of reasons to settle near a volcano and take your chances with the occasional 'Earth Belch' it also provides
Just wanna point out Olympus and Ida are not volcanoes.