I thought asynchronous circuits would be more prevalent in the future because clock speeds couldn't increase indefinitely, but it turned out that everyone would

I thought asynchronous circuits would be more prevalent in the future because clock speeds couldn't increase indefinitely, but it turned out that everyone would rather use all kinds of weird-ass kludges to avoid them in ASIC and FPGA design such as frequency scaling and multiple clock domains. I also expected functional programming to become more mainstream, which partly happened.