Most or all religions believe in Angels?

Why is this?

Because angels are a universal experience of mankind.

IN Tibetan Buddhism, for example, they call them Dakas (for male angels) and Dakinis (for female angels). But I have heard Chagdud Tulku who lived in Oregon in the 1980s with a following there call his wife a Dakini and sometimes he also referred to his female devotees as Dakinis. So, often this term is used regarding female humans in the right state of consciousness too.

However, what are angels?

My best guess from my experiences with angels since they saved my life from whooping  cough when I was 2 years old is that they are either:

1. Souls who serve God who haven't become human yet or never will choose to
and
2. Souls like Archangels who have free will like us who become humans to learn free will in the course of their training as Archangels.

Where do angels live?

Since Angels can visit literally any time or space (as many times as they want or need to) they literally live everywhere.

As a part of my training in this lifetime I learned to Soul Travel with Angels all across our galaxy.

This was both an amazing experience but at times completely terrifying too. The most difficult thing for me to survive was to go out soul traveling beyond the edge of the Galaxy. Time and space only exits within a Galaxy so when you leave a galaxy and are in between galaxies there is NO Time or Space.

For most regular human beings not trained for this it was like being dropped on a cloudy night from a helicopter into the ocean naked in the middle of the pacific ocean. This is not what most people want to experience with no up, no down, no time, no space, no definition of any kind whatsoever.

So, if you aren't an advanced Yogi doing something like this for some altruistic purpose it would only lead to madness if you stayed there long enough.

For me, I was so terrified I snapped back into my body on earth and decided I had had enough of soul traveling for a few years time.

Several years later I met Tibetan Lamas who understood all this and weren't freaked out by it like I was at the time.

By God's Grace