[nickpsecurity]

Many use GC languages for productivity in code where that’s more important. Far as slowdowns, there are concurrent and real-time (fixed timing) GC’s out there which reduce or avoid the problems you mention. JX OS also let you mix different GC’s for different components.

So, there’s a performance hit of some kind with optional tuning that takes no expertise. Many people would go for those tradeoffs for some applications. Especially if they got to keep using safe, no-GC code in their libraries with their efficiency benefits.