Yes it's possible for bitcoin to become worthless, if someday the bitcoin price dropped to under $10, i'm sure people will stop using bitcoin anymore. Many people will leave and it makes the bitcoin price more low and low, soon the bitcoin will be worthless. I hope these things will never happen though.
I think what you imagine will not happen, we see the world of technology is always developing and providing human needs in a practical way. of course with the presence of bitcoin a new discourse for the transaction world later. and I think the pros and cons at the beginning of the process are common
Things that continue to grow over time and it's true that Bitcoin is the beginning that will make new things grow and grow. you can feel that you live in a digital age.