Hello!
We, all crypto users are wish a long life to bitcoin to it continue to bring us some extra profit on different ways. But one day something new will replace bitcoin. My question is - how many year you give to bitcoin before it will turn totally useless?
I don't think any other new coins replace the bitcoin, Now already bitcoin has spend a long time, not too much but still it is alive with a good reputation in crypto market, even during this long period most of the other coins come and try to break the top record of bitcoin, but these coins couldn't do it. Hence bitcoin will be live long life and no one will tell you how much time bitcoin has. So use it and get profit from bitcoin as long as it is alive.