bitcoin has been existing for quite a long time now. a few months ago nearly no one (in germany for example) knew about bitcoin, it was a minority who did and who did big earning during the course increase since the very first beginnings. while bitcoin hit 2k in may / june of this year the media startet heavily to jump on that train, for example facebook was flooded by bitcoin news. most of them very euphoric. from friends and what i've hear all around a lot of people who don't know anything about cryptocurrency started to invest and they did decent earnings due to the further price increase of bitcoin.
but - will this lead to an bubble? all those people investing and knowing nothing about crypto? don't know how to pay? how to deal with forks - or what forks even are?
will this together with the high transaction costs - and therefore no usability of bitcoin as a daily payment currency lead to an heavy decrease in value?
and will the altcoins decrease as well as they are highly correlated to the bitcoin value? what is your opinion?
I think you're reading too much into it. While people who have no idea what Bitcoin really is truly are a greater dump risk, they also usually have very few amounts to begin with. People who do invest significant amounts make sure what they're getting into -- that's the difference. You also have to keep in mind that dips encourage buys.
As for the daily payment currency part, I don't think so. Majority of people aren't interested in Bitcoin as a currency; they're only in for the investment. Heck, it's being touted as digital gold. You don't pay for your daily purchases with gold. People know what they're getting into. Even then, the community is trying to address issues. We were able to implement Segwit, with Lightning Network up next. Bitcoin is very much a work in progress.