You're falling into the exact argument trap you laid out yourself. Einstein had no clue what would be possible just 100 years later and just because we have no

You're falling into the exact argument trap you laid out yourself. Einstein had no clue what would be possible just 100 years later and just because we have no clue how to ever measure a singularity (which is actually not completely true, but let's not get into that) it would be very presumptuous of us to say that it will remain impossible another 100 years into the future. Just imagine if people kept listening to the guys who kept saying all the stuff we do today is impossible. Science is incremental steps - and we have to follow them disregarding of how worthwhile they might seem right now. Very rarely will someone come along and enable something directly that was thought impossible just recently. But over the long run, things work differently. Sure, we'll reach a lot of dead ends along the way while pursuing great things, but on the other hand we don't get anywhere at all by only listening to people who can't imagine anything.