I came back to London after being away for a while and noticed something is different. Now there is all kinds of bitcoin (and ethereum) commersials all over the place, trying to sell people crypto investment services. I've always been told that if investing becomes so popular that it is discussed in the pubs you should sell. This makes me kind of worried. What do you think?
Your fears to me has some validity and that's exactly what comes with all our quest to ensure bitcoin becomes so popular now that its getting popular, it then create further fear in the mind of people because of the various investment principles that have not failed in the past. Just like the poster above have said concerning Rockerfeller in 1929, the same thing happened in the recent depression that gave birth to the emergence of bitcoin as expert knew it has gotten to the point where it needs one needs to exit the market.
The difference between the above and what we have now, is because while almost every family in the world have a partaker in the crash that happen because of the increasing popularity of stocks then, the same thing cannot be said about bitcoin. Also the volume of transaction and amount of money involved at that time compared to what is in bitcoin is just a fraction and not anything close to that.