My 2 pence, actually off topic as this thread is meant for 1:72 and 1: 48 scale.
When I wanted to try building a kit, I went for the Eduard's Eindecker 1:72 from weekend edition I got as a gift from my good friends who wanted to let me taste kit building instead of scratch building. I finished the build but I had to admit that I enjoyed much less fun.
Thinking about the learnings I came to following conclusions - 1:144 scratchbuilds from WWI are great for following reasons:
- you can choose whatever type you want and do not have to wait for kit releases
- there is no stash of kits next to your workbench, only a stash styrene sheets, files and putty

- building a model from plastic sheets with signs like "no trespassing" or "watch your step" simply makes me happy
- even when the result does not look good, you can always say "ok, with respect to the fact that it is a scratchbuild, it could have looked much worse"
- all the money you would spend on kits you can spend on tools and paints and styrene sheets and brass tubes and brass sheets and welding materials and all other stuff you would not need if you were building WNW kits

(unless you were Bo or Bertl)
- if a B-29 in 1:144 looks cute, how cute must a Nieuport XI look?
- when you travel to contests, all you need to transport your collection is a box with dimensions 10 x 10 "
- and above all, I love the look in the eyes of small children when they spot my collection

Cheers.
Ondra