[avera]

Why such/similar tool with a simple GUI interface isn't default standard, for most popular languages/platforms ?

Wouldn't it tremendously save developers time ?... And, accordingly, huge amounts of money ?

Please! No more sado-masochism!

[devit]

Looks like it's because until now it was not available, since rr has gained both reverse execution and x86-64 support quite recently (now and end of 2014 respectively)

There have been other similar tools previously, but they were either slow (chronicle), unable to work on complex programs or only worked on VMs.