I dont know who would actually make the switch. Bitcoin is similar to gold in many ways, only its much more convenient and because of its decentralisation its an amazing inflation hedge (as some already said). Store of value and liquidity is not an issue for bitcoin.
Bitcoin is estimated as a risky financial asset and I hesitate it can replace the gold as a cryptocurrency store of value. For replacement, there are genuine alternatives that volatility is lower than the daily velocity of bitcoin's price. Investors sell their risky financial assets when crisis nock the door and their money flows to safe assets like gold. I doubt they will transfer their wealth to cryptocurrency.
Bitcoin was not meant to replace gold. It will replace the paper currency only. Even currently when paper currency is being used every where, Gold still exists and will exists always.
True. Bitcoin is more portable compared to gold.
But withstanding the test of time, gold and silver has been the only "real money" for 5000 years.
The digital revolution that we are experiencing is exciting and is also changing money as we see and use it.
I would suggest to try and acquire both BTC and some gold/silver if you can get hold of it.
Both are better storage of your economic energy than fiat for long term.
If you say that bitcoin is more portable compare to Gold than i would say it is more risky too and can be theft easily because of its online availability. Gold is a physically asset cannot be stolen unless someone physically broke into your house.