The top obstacle to Bitcoin being mainstream is mass adoption. Bitcoin now is mainly purchased off an exchange.
If there was an option to use bitcoin as a currency for paying salaries, and calculating how many bitcoins is worth an hour's job. This would increase circulation.
As long as BTC is pegged on Fiat currencies, it will keep being used as a speculative tool.
Bitcoin constraints are now a lot but I will mention only 2, namely the unstable market price and the many hackers in this world and that inhibits bitcoin and damages the bitcoin image I think that's the main problem I feel in this coin
I agree with there I also think about it so we must be responsive to the problem do not be careless in all the problems we can learn from there we must be adults also face problems