I like beetles too.
Never kept one as a pet - apparently some of the larger species are (relatively??) popular pets in Asia.

We had an infestation of large beetles on our fruit trees last summer. Big, beautiful metallic jewel toned beetles. Eating fruit must be part of the end of their life cycle, because I'd find them dead in the hundreds all over the ground (no, we don't spray). They kept their colour even in death, so I brought one in to admire. It is still on the mantle - dusty, now, but very pretty.