pets are RIDICUOLUSLY under-P late game.

[Shahamaster]

I mainly see my pets as a vainity thing. I love the feeling of trying to achieve that cooler looking pet, for months and months, and finally getting that first transformation. DPS upgrade is NOT why I do it. I do understand, however, people who see this as futile and will not put in the effort of doing so.
Even so, I would still invest in pets if I was them, as it is unavoidable that a positive nerf will arrive eventually.