DMScott said:
With sufficient suspension of disbelief, sure. Howard wasn't a cultural anthropologist but rather a pulp writer, he chose the cultures and locations to tell rip-roaring adventure stories. But given that framework, and the other themes of his stories (i.e. that civilization = degeneration), he handles the mix logically.
It's not all that illogical, anyway. The fact that Conan travels to all of them makes it seem like they're close together, when in reality, he's not the norm. Howard's world, as stated earlier, has a kind of 'roll-up' history, that frankly, he probably put little thought to until people started clamoring for it. He wrote the stories he wanted to write, they just had Conan in them. Then he had to retrofit all the locations to some logical map. Again, not too different from the 'campaigns' that have come out of WotC.
Conan starts many of the stories broke, with only a sword and the clothes on his back to his name. Treasure is used to drive the story along, not to make characters more powerful as in D&D.
I'd also add that even the money itself isn't the driving force...the drinking and the wenching and the carousing were the ends. The money was just the means. The adventure was the way to get the means...and technically the only profession he knew. For some reason, my players were always the most concerned with the lack of money portion of a 'Grim Tales' type of setting. They could give up most of their items and magic, they could settle for the 'ancients' having more mystical power than they would ever scrape together, but start the adventure with a lean purse and they were whining and begging to go back to Forgotten Realms, or 1st Ed. Greyhawk, where the gold flowed freely and everyone had a bag of holding.
A third major difference is that Conan's objective is often "get out of here with my skin mostly intact and the girl on my arm". Despite being the greatest warrior of the age, he often runs into foes he can't kill, and ends up on the run. Many D&D players aren't quite used to exercising that sort of tactical discretion.
I'd argue that Conan's objective was typically only the girl on the arm. The skin intact was a necessity, but he didn't really think about that until he had to. He also had a bit of power-mongering in his 'desert chieftain' days and later when he was King of Aquilonia, though his pirate days were all about Belit...mmmm...Belit.
And like many here, I highly recommend you read at least a handful of Howard's originals before you dive into a campaign. His version of fantasy is wildly different from the regular Tolkien-ripped stuff that most people play. I think the overarching theme in the Hyborian World is "Look after
yourself, or you'll be throat-slit in an Arenjun alley before you know it."