one of the hassles for people using bitcoin in the daily transaction for sure, depends on the market condition it can take in a blink of an eye to be confirmed or waiting for hours.

it doesn't matter at these times as we can pay 1-10 sats/b and it will be confirmed within minutes, but when the price of bitcoin increases, we have to pay a higher fee and wait

for a longer time, very inconvenient. Hence, there are a lot of cryptocurrencies that offer instant confirmation and lower fees for transactions.