I use to have this same mentality on the FP system. I use to get so bummed out and almost angry because I couldn't keep progressing with my main character. But after seeing what happened to DFO Nexon after putting in the blitz system, it was quite apparent what had happened. Keep in mind the blitz system also lowered the drop rate to practically nothing.
The economy exploded into a gold buying mess. It costed so much money to get scrolls to farm hellmode, you almost felt forced to buy gold to get started. Alongside with infinite play is they would also have to lower the crap out of the drop chance for anything worth your wild. We ended up with more discouraged players hitting a wall because they couldn't buy gold or get drops. In a f2p game, that is gonna cost you more than anything.
A healthy economy is an integral part to any MMORPGs, especially with an auction system. Take what is happening with awakening mats right now. It's in such high demand and expensive, but it's still doable. If we had unlimited fat right now. The bots would outnumber human players and take over the AH. You would see so many discouraged people bitching even more about awakening.
Fat helps limit and control gold sellers. Neople only has roughly 10 people managing DFO Global, there would be no way to keep up with booting volume. Heck, WoW has a pretty hefty staff and their game is flooded with gold right now to the point you can barely BG anymore. If you want to buy DFO gold, ssegold.com is a online site with fast delivery and 100% security Guarantee!
You really don't have to stop playing DFO when your fat runs out either. All the different classes in this game is one of the beauties of this game. PvP is also a ton of fun. Especially in DFO right now, because we have such an array of players playing right now. So you can always find skill equivalent match ups. I say just try to adapt to it. Make alts and if you are stuck on one single class there is usually an alternate gender variant to appease. I think the fat system is the life blood of the economy alone. I'm not even going to get into the other issues. If you wan to own good weapons or equipment, just buy DFO old with cheapest price on ssegold.com
Half the people on here complaining have never played DFO before. A lot of them have never done the high level or end game content. This game has other versions. They all use the FP system. All those versions are doing just fine.
People usually cannot embrace change. The people I see mostly complaining about the FP system are basement dwelling no life man children. These people have a lot of time on their hands. They want to play all day and night. Sadly the FP system is here to stay. So either you play the game or go play something else. The loyal supportive players will stay. Which is what a game needs.