Single Hung vs Double Hung

We have a few double hung and never open them. I guess it could be good if you have children you are worried about falling out.

Just replaced most of my double hung wood windows with single hung vinyl. I work for a glass shop and have ordered whole window replacements in the past and double hung is what most manufacturers were pushing at the time. I'm sure its cheaper for them to produce, but I don't see much of a point of it. Unless you just want to be able to open the top sash or for cleaning like you said.

not a deciding factor, but the contacts for my home security system are on the bottom of the window, so having double hung I can sleep with the top pane down on cooler nights and still have that zone secured without having to bypass. Not that in S. LA that weather happens very often, just saying.