In some countries there are Bitcoin machines where you can exchanghe Cash and Bitcoin. Would you use this machine or rather buy your Bitcoins in the Internet? 
Interesting post. Same mindset here. I strongly advice people to only buy in to cryptos that have a solid background: A solid team, product, advisors, preferably VC investors, etc. Sell all cryptos that don't have this solid background. It's a waiste of money. I found this great website: https://www.coincheckup.com I'm really enthusiastic about this site, they let you analyze every single coin out there. Check for example: https://www.coincheckup.com/coins/Bitcoin#analysis To see the: Bitcoin Analysis.