Quite right. I try to do my best, but sometimes I can lose my patience. Sorry about that.
Alternatively, you could accept the fact that your dislike of d20 is not objective, but down to your personal tastes.
I could have said it in a smoother way, but it won't change the fact that D&D rules were designed for power playing,
Power playing? The whole idea that developing characters in a system and role playing are in any way contradictions is one I encounter often and have never understood. Role playing is not done using the system: how can the system affect it, one way or the other? The system is used for resolving all the system based bits. And all systems have methods for character advancement. All systems, all of them, can be power played if the players choose to do so. There's nothing unique about d20 in this.
I don't say the "tactical wargaming" approach is bad
But you do. And you also say that games with tactical wargaming aspects are inferior for roleplaying, which is not the case.
I don't feel the "Power Curve" in REH stories. Conan's fighting prowess doesn't seem to improve much in the stories, as he is a formidable fighter from the start. After all, he kills two frost giants very early in his carreer, a feat that would have been impossible for a lone low level character by following D20 rules.
It is certainly true that Conan, when he appears in the novels, is not a first level character by any means. I am a fan of starting the PCs at a reasonable level, and awarding levels slowly.
Power leveling also often fails to capture the semi random structure of REH stories. No chronology, no bigger stuff, no greater standing, (even if he ends as a king, the mood is more 'chief today, slave tomorrow'). Quite the contrary of what we can find in the rules.
He begins as a member of a barbarian warband, then a lone thief, then a mercenary serjeant. He then rises steadily in reputation and power, until he is routinely taking charge of whatever group he is in be they Kozaki horde, Zuagir band or pirate ship. He ends up as king of Aquilonia. Actually, I AM seeing quite a curve there!
You are correct that it is not so much his personal combat prowess (although I think that does improve) as his leadership, knowledge and cunning, but the feeling of advancement is there. One doesn't feel, for example, that the expert manipulator of the Black Stranger would have had the trouble with Nemedian law that the barbarian of God in a Bowl did.
No, not everyone. Only you, actually...
Herve. Take a deep breath. Step back. Just say it. "D20, while a system many people enjoy, just doesn't do it for me. I don't like it." Drop the pretence of objectivity. Relax. Accept that systems are a lot about personal taste, and the fact that people disagree with you about liking d20 doesn't mean either side are "wrong". Let go, Herve.