What do you mean by trusting? I trust Mozilla to increase the executives wages at the cost of everybody in the organisation. I trust that they'll incorporate more and more features I find unwanted. Privacy-wise I haven't trusted Mozilla since telemetry was opt-out. Security wise I haven't trusted any browser for decades.
Each to their own, I hope you're happy with your setup.
I'd love to inherit a house even if it had no appliances and was falling apart...