I believe it's to a large extent regional a thing. Force air is easier and cheaper to install so it is tending to take over. There is a downside to FA which is largely ignored (at least until serious problems occur). The bulk of FA systems employ a central air return i.e. supply ducts run to each room but return air is through a single grate in a common area. That's fine until bedroom doors are closed; then suddenly a large amount of air can't get back to the return. the effect is that the bedroom pressurizes, while the rest common area depressurizes. Close all the bedroom doors and it's easy to get enough depressurization to cause backdrafting on atmospheric vented combustion appliances eg. gas water heaters, fireplaces, and the furnace itself, not to mention pulling air from attached garages, and soil gasses from crawlspaces. The moral is to be aware of how your house works. FA can work fine if properly installed i.e. adequate combustion air supply, tightly sealed ducts, and either individual room air returns, transfer ducts, or pressure relief vents.