Add to that the untold stories when sprinkler systems are accidentally triggered, and you have to wonder if they do more harm than good.

@ML, Not according to the research on loss-of-life and overall cost of an out of control multi-family building fire! Maybe it 'might be good' to ask the Fire Department Chief - or your local fire-insurance broker: sprinklers-or not?
I believe the Fire Code now requires such fire suppression systems on all NEW single family residential builds. (the tech is now Much Lower Cost to install).

PS The Division of the State Architect (DSA) enforces the educational building code that Requires such sprinklers on all new schools with a state contribution. Although such buildings without sprinklers, when occupied, do not have a large loss-of-life record, the loss of "business continuity" [classroom environments destroyed] can make it very disruptive for learning.

Trace Elementary Santa Clara County Civil Grand Jury Report (fire loss)
Web Link