Great subject!
I started building with my father around 1954 or so. Old time cars and the occasional spacecraft, locomotive, etc. All that I have left from those days is a complete ancient locomotive with freight car and two passenger cars that look like stagecoaches. Wood.
In high school I did custom cars. That's when I discovered canned spray paint. I started to do more airplanes and settled on 1/72 scale about
1965 or so. That's also when I discovered Air Progress, Scale Modeler and Profile Publications.
Around 1967 or so my first wife introduced me to IPMS and through that contact I discovered flat paint, after market decals, a wider range of research material and the bigger worldwide market of kits. I started a little modeling newsletter and met Dave Boksanski and George Lee, both of whom passed on tons of interesting techniques and ideas.
It wasn't until about 1980 that I could afford an airbrush and compressor. That's also when AMS set in, going from at least a dozen completed models to a few per year. Somewhere about that time the first cast resin kits arrived from the Czechs, to be followed by a flood of new kits when the Wall fell. That was the main reason that I got into kit collecting in earnest.
Now, with about 2000 kits and 7000+ aviation and modelling books and magazines, I guess I'm stuck on modeling. I have yet to complete a kit using after market parts, but I have picked up the detailing sets for about two dozen kits started since the early 1970s. I have also found that both research and occasionally model building can be lucrative. Not exactly a money making business, but fun. I began producing and importing cast resin kits around 1982 and published my first book on scale models around the same time.
Oh, the tools. I don't know what I would do without the Dremmel, the dental picks, the wet sandpaper, the four sided emory sticks, etc., etc.
Is it better today than back then. I think so, but it's isn't so much the better or worse as it is the wider variety of choices and the access to materials.
Happy modeling,
Tom