Due to our fallen nature, no economic or political system we devise to going to be perfect.
That's true.
At least in today's world you have the option of owning your own land. In the feudal system, unless you were born into the nobility, you were out of luck.
That's what I also used to think until very recently. A great book called 'St. Francis of Assisi, Thirteenth Century' briefly explains (if I recall correctly) that enterprising peasants could and did buy land. They weren't necessarily forbidden from having other sources of income or owning property. (The author doesn't advocate a return to the feudal system, but she does argue that its horrors are somewhat blown out of proportion.)
The thing that appeals to me about the feudal system is how it seems to foster greater accountability. When the king or local lord failed in his duty it seems to me that it must have been more of a public failure and he could be admonished. What we have now is a government that's so bloated it's usually impossible to figure out exactly who's responsible when anything goes wrong.
I think the feudal system could return but first there'd have to be a collapse of this one. I don't think anything else will make it attractive.