The established religions that I grew up with, I felt lacked the value of environmentalism and gender equality. Even Buddhism could be culturally prejudiced against women.
Wicca had appreciation for the natural environment and gender equality as a prominent value, and information about neo-Wicca was the most widely-available even if it was usually full of errors. Also, it actually presented itself as an actual religion, which I actually liked back then and thought that I needed, rather than environmentalism or feminism being a philosophy/ideology/whatever else that's sort of vague and doesn't seem to demand as much recognition as Religion. (Note the capital R. Demaaand. Hey, demanding recognition can be an admirable quality.)