Is the song minor more suitable for singing?

Why are most popular songs better sung in minor?
When I try, I always find that minor is more suitable for pop songs.
It’s not sad. I also have many happy songs. I still think minor is more suitable for finding the feeling of singing.
In reality, the operation is like this. If I use major, I start in C major, and then I always feel that there are several chords. When I sing, I feel stiff.
If I start in a minor like Em (I). Then you can connect G (III), Bm (V), C (VI) or D (VII), which are very comfortable.
If the middle changes, it will be more flexible.
I don’t know if you have this feeling, that is, singing in minor is more flexible than major.
I want to know how it works. Hope to explore.