Or are you waiting for bitcoin to gradually become popular alongside fiat?
What are you waiting for?
If the fiat system collapses, so will all our utilities. Bitcoin is useless with electricity and the internet.
Someone has been watching too many Mad Max movies. So when the Argentinian currency for example collapsed did the whole world lose electricity?
Yep, if you think about it this is a non-issue. As soon as fiat collapses all the private security contractors will begin accepting bitcoin as payment. They fight for nothing but money so what else will they do when everybody starts shoveling their fiat into the fireplace to warm their houses? Once the mercenaries realize bitcoin is the only dependable currency the first thing they will do is take over the electricity and communications infrastructures to secure their source of income which will immediately become bitcoin. At that point those who were sensible enough to set aside at least a little bitcoin just in case this scenario unfolds will be the only ones able to guarantee their security when pandemonium breaks out. Everyone else will be at the mercy of the bitcoin holders. This is why it's important that the bitcoin community works diligently to expand the bitcoin community to include as many people as possible, before all this blows up. That is, of course, IF it all blows up. For all I know the fiat system will find a way to perpetuate itself for further centuries. But I'm holding on to at least a little crypto just in case.
Even if Bitcoin isn't massively used during a fiat collapse then it still will serve the same purpose Gold has. ie preservation of wealth.....and likely increase it a lot.
The truth is gold and Bitcoin doesn't always have that much use during a collapse, people just want food etc. it what it does is when assets have crashed to the floor you can come in and buy them for peanuts. This is the whole purpose of owning Gold etc, to get to the other side of the disaster intact.
if I was American I would want in order.
1. Log cabin, stocked with canned food.
2. Reliable water source.
3. Electrical generator/solar.
4. Gold/Bitcoin.
Where you put a gun into that order is up to personal choice.
Seriously, I love Christmas time and holiday season. 
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