If you want to invest in real estate or the stock market you are free to do so, but you're never going to get the profits you can get when you invest in altcoins . This is because altcoins and even bitcoin too are still very cheap so their tendency for growth is wider than what's in the regulated stock markets. Everyone knows real estate is a long term investment. You can diversify for better protection of your assets. 
If you had invested in the stock market six months ago and pick technology stocks like Salesforce, Google, Amazon, etc. you would not have lost 80%+ of your investment but made up to 20%. The question is not which market is better, it is important not to be exposed only to one single market but spread your investments across several markets.