In my experience when you get familiar with DnD you start thinking a lot of "I wish I could play this class this way" or "I wish there was a system for x or y". Now you could stick with DnD and create homebrew these yourself but if you don't want to you can use the already rigorously tested and researched material from Paizo. My personal opinion having played PF 1e and 2e I prefer 1e.
In my experience when you get familiar with DnD you start thinking a lot of "I wish I could play this class this way" or "I wish there was a system for x or y". Now you could stick with DnD and create homebrew these yourself but if you don't want to you can use the already rigorously tested and researched material from Paizo. My personal opinion having played PF 1e and 2e I prefer 1e.