Pointlessly contrarian?
Nah. Pointedly contrarian perhaps.
Bored and irritated with meaningless and unnecessary restrictions?
Yeah. Willing to give it a go anyway, but with hope of making the game a bit more fun for me, and not just playing a nearly pre-written role in my DM's screenplay?
Yeah.
You might guess . . . I've played in more than a few games where the DM pitched a campaign idea, and was less than clear with exactly what they meant (
"Knights of the Round Table" as genre vs a "knights-only" campaign) . . . and/or placed restrictions on characters that NEVER made sense to me, even after a few sessions of play (
"Why exactly are we all knights again? And my hexblade sorcerer-knight just would BREAK the story? Erm, okay . . .")
And there are levels of contrariness . . .
DM:
"Okay Bob, I think a priest whose connection to God grants her miraculous powers sounds cool, as does Jim's sorcerous apprentice to Merlin . . . I can even see Lisa's knight whose made a pact for warlocky power . . . but we're gonna need at least a couple of KNIGHTS in this game here, and Frank's tabaxi artificer is just a step too far for what I'm trying for here . . . .