There is a far vast difference between making things overly complicated to yourself and not being able to handle something.
To go to the school you can just go down the road. But some people like to go to the other end of town, taking every winding side road, shortcut, and driving through backyards and literally ending up driving in miles at a time all to wind back to the school. Does the person who takes the easy route [down the street] a pussy, or is the guy who takes the supposedly 'hard' route an idiot?
Modelling in triangles is bullshit no matter how you take or give it, shading errors, geometrical errors, UV unwrapping is absolute brutal with quads, try quadrupling your polycount, and THEN try unwrapping again.
Mate, I don't care how 3D engines translate models, it's not the correct way and if anybody has taught you it is, then they are full of shit.
Here's a model made of quads: Clean, easy to work with, easy to use.
If I wanted to add some extra geometry here to create a edgeloop, I just select the plainly visible edges, and connect
Here is a triangular version of the model. Notice it is a massive garbled mess of spiderweb like geometry, unclean, extremely difficult to work with, but let's try adding a edgeloop.
I had to select TWICE the amount of edges to get the same result only with worse control, with faceted face lighting, and messy geometry. Let's connect.
At this point I could just not bear it anymore, I tried to do a full edgeloop for the stock, but ended up just reconverting it back and doing it in two minutes:
I also don't get how it's even possible to 'model in triangles' without eventually just committing suicide from the sheer difficult of it. Even performing absolute bare basic tasks to create new geometry takes twice as much effort and time.