For me bitcoin investment is more interesting and profitable than other investments such as real estate, gold, stocks and so on, this is because bitcoin prices can go up hundreds of percent annually while real estate goes up no more than 20% per year.
Thats right. but keep in mind that real estate is still much safer because these kind of investments are stable or not volatile compared to bitcoins.
Yet , Much better if we can invest on them both if ever we have a good amount of cash , so that we can still earn on both sides if ever the other one failed us to give a profit.
though in my case i do only invest in bitcoin because i only have a small amount of cash on my pocket but if ever i got a lot of profit from my btc invesments , ill also do try other types of investments such as real estate and others.