[vubuntu]

This applies to everything. Why just software?

I could say the same about mechanical or electronics of a vehicle

"I've always been leery of vehicles. They run on mechanical parts. Mechanical parts are only as good as the mechanical engineer that designed them and the quality of material. What if a newly introduced part was not well tested and developed a stress failure due to design or material deficiency. Be it in the middle of rush hour traffic, or hurling down the highway at 70mph? How do we account for the issue of buggy mechanical parts or electronics "

See how that works? Everything other than your own two legs is man made. It's just the level of maturity of the process and testing and time that eventually gives you enough confidence to start trusting any human made device, whether it is software, mechanical, electric, electronic etc...