I really don't give too many flips about the debate over past v present strains.
My limited experience (past and present) inclines me to prefer what I've seen out there now - but I'm not a big toker, just a big talker about toking. My past present (near past) experience had to do with mj for migraines.
If it were legal, I would vastly prefer mj to imitrex. Imitrex makes me feel drugged and hung over from its drugginess. The experience with mj made it possible for me to get work done (while high) b/c I immediately didn't have a headache, and I didn't have a typical migraine or imitrex "hang over." (Migraine hangovers are like alcohol ones - one reason I don't care too much for alcohol - migraine hangovers make it so that you lose two days of your life - mj - no day lost.
All that said - I met and interviewed someone who created one of the strains that's used for some hybrids these days - current strains, and from lore that I picked up, we owe much to the US presence in Afghanistan starting with Ronnie Raygun for current cannabis strains.
The flavors/smells are natural features of terpenes in every cannabis strain - part of botany's ever changing evolving mutations of plants.
Humans have selected for plants with fruity smells - for the smell itself, and for the masking of skunky funk that might be a negative in states w/o legal mj.
I think it's wonderful and magnificent that humans and cannabis have a positive effect on one another - like NdT's example of dogs, in Cosmos - cannabis has been domesticated by humans and now has as many varieties as dogs, most likely.