I.think that the biggest problem with Bitcoin is that its' amount is limited. That would probably be also the biggest obstacle for more massive use.
No.. that is the biggest feature.... It is the near perfect gold...
Not sure of that. Gold's finite quality isn't actually locked down. As conventional deposits are getting mined, more sources are being explored. However, we KNOW that there is a LOCKED limit for bitcoin. Gold's value is partially tied to the ease, or lack thereof, of obtaining it. If a new gold mine is discovered, the price would plummet. If a new sieve system is invented for harvesting from Alaskan waters, the price will reduce. If sanctions are imposed on gold producing nations, the price will increase.
In this way, Bitcoin is almost more robust than gold. However, it also means that there is an absolute endgame, wherein the trade of bitcoin is a zero-sum game. At that point, it will have a value determined by global consensus. A major controlling stake in the global supply would be needed to seriously change the perceived value relative to usable commodities/services.