Unreal engine questions

Hi everyone, I'm doing some research on game engines and came across this platform. Would very much appreciate it if you could spare ~5 minutes to help me on a few quick questions :) 1. On a scale of 0 to 10, where 0 means "not likely at all" and 10 means "highly likely", how likely are you to recommend Unreal Engine to a friend, family or game developer as a game engine? 2. How challenging / difficult is it to switch platforms once you've started using one? For example, if I started developing games on Unreal Engine, would it be possible for me to switch to Unity if needed down the line? Thanks!