Will the bubble eventually burst? I think so. I just think it could stagger on for a few more decades before the belief it has value eventually collapses.

I don’t think the lost belief in its value is going to collapse on its own. It is already accepted to have value by enough people, to sustain that belief. (A bit like a religion, if you think about it)

The downfall of bitcoin will lie in it’s technological design. The whole premise of the underlying blockchain technology relies heavily on Moore’s Law to keep working indefinitely. The complexity of the cryptographic calculations that have to be solved for each BTC transaction increases with each transaction, so it relies on exponential growth of computing power, or rather energy efficency of computing (which is a bit differen than Moore’s Law), to remain useful. The more widely adopted the bitcoin becomes and the more it is traded, the greater the challenge to keep it operational. That is a very impractical limitation for it to be useful as an everyday currency. If, at some point, the time and or cost-efficiency of the crypto-calculations cannot keep up with the number of BTC transactions anymore, the operational cost (or inconvenience) will limit its use. And at that point, I think, the speculation bubble will collapse eventually.

Now when that is going to happen, I cannot possibly know. I’d invest in leverage products against it, if I did.
Maybe progress in chip manufacturing will still continue to exceed my expectations. Maybe a breakthrough in quantum computing will enable the BTC to become a universally accepted currency or maybe it will break its underlying cryptography and kill it dead.

Whatvever it may be, but my prediction is, that if the bitcoin is to collapse, it will probably have a reason rooted in technology.