How the fuck do people even get memory leaks?

Especially when tools like valgrind, dr. memory, gperftools exist. When I write C code, I write tests for most non-trivial shit. After I compile, I run valgrind. Boom. Immediately I know to fix a mem leak before it gets out of hand and too hard to trace.

Can it be true? Are mem leaks purely due to programmer laziness? Too fucking lazy to run a small piece of software LMAO. Go fuck yourselves.

DYNAMIC ALLOCATION IS BAD

YES IT IS BAD

IF YOU USE MALLOC/NEW AND FREE/DELETE AT RUNTIME, YOU ARE A BAD PROGRAMMER