I think gold is always going to remain more stable and will always have a real world use as a useable precious metal, but bitcoin is unstable and unpredictable, though I do think it is the best option to see a big profit and return on investment though it's very risky and not guaranteed. I'd prefer to put most of my money in Bitcoin for investment purposes. I just think we'll need a few years to see big gains hopefully.
But gold has been there for a long long time so its understandable to be more stable. Bitcoins are fairly new and can still grow, i think thats a really good quality. Meanwhile gold has a stable price with bitcoins you could buy 1 today and in some years maybe its worth 5.000$ or maybe 1$ thats the beauty of it
Even if bitcoin exists for a long time, even then it will probab;y never become enough stable.