Because he's not good enough for the mainlines. The story said this multiple times. He would be better helping people with easy quests and the party wants to go for the harder ones.
Honestly this trope is stupid mainly because people make it a show out of it. (that and some other stuff, like...
Good first chapter. Introduces the main plot and the main character personality and motivation very well. Could have some 'fighting' scene with the mecha-armor to close up the chapter but it's still a decent beginning.
Well, there's nothing that implies that males are automatically weak. It's just a matter of mindset, really.
On the other hand, the "family arc" is getting boring already. We can move on with the school arc, please?
I mean, it's a society where Males are scarce, heavily protected and guarded (the story doesn't show, but it would be obvious that society and laws skew heavily towards mans) and not only that, said males are discouraged of pursuing high level education. It generates a species of men, without...
The "OG" one is still one of the best ones. Few bother to actually discuss the Society, most of them are just lame excuses for porn. Even the original doujin had some fun with the topics in the middle of the sex.
(I) Liked the analogy of "beautiful people but with shallow relationship" going on here. Makes sense that you are always reluctant to open yourself when people are always attracted to you.