Joints provide effects for my wife she does not get from bowls or straight vaping. Over the years I've attributed it to the vaping & smoking effect of both. Multiple heat levels, pre-vaped cannabis burning, first and second hand smoke, there are quite a few variables which come into play.
Vapes leave her wanting, bowls less so, and sometimes she simply needs a joint to get properly medicated.
The lung function and cancer studies are interesting. Now you can see why using trichome dense, 'clean' cannabis (free of any extra nutrients or other un-converted non-cannabis molecules) does not cause a decline in lung function at all. It's a minimum of plant material and a maximum of cannabinoids and terpenes. It's Guud(tm).