Pyromania is the persistent impulse to set fires.
One antonym for occasional might be 'frequent'. Persistent doesn't really seem to be a good fit here.
No it is not at all good , it is bad and dangerous.
this happened in my 2004 300m... my deodorant went out
The athlete had a persistent pain in his knee. The persistent residential homeowners were finally allowed to talk with the mayor. Some pesticides remain persistent in the soil for months.
good
persistent pain
I was vexed by a most annoyingly persistent young man."You are very persistent in getting an answer to this question."The small business owner was very persistent with their product.
It teaches us to be a good friend for other no matter what the circumstances are.
good and bad
Bad And Good
You must be patient and persistent.