For those I DIY, I use both for primarily the reason it's far simpler to DIY a single sided PCB and when using SMD the routing paths are more difficult to find, but with the addition of a few TH resistors on selected Nets, they open the paths for traces that would be tricky to find without other side wire links or a double sided PCB.
For any volume you'd get them from a PCB house and double sided of course.
For manufacture there will be other considerations, primarily the choice between Reflow (SMD only) or Wave soldering where components need be stuck down (SMD and TH).
Adhered components can make rework more difficult when used.