Hi anthem,
I am happy to share my perspective on your questions....
1- Emotional reactions will disappear with enlightenment or spiritual mastery (if you don't believe in enlightenment)?
Emotional reactions (like anger and irritation) are autopilot responses in the subconscious. A stored energy structure that responds to stimuli. Drop the issue/structure and the automated response also drops. Or said another way, when residing in the moment, one is "free" to respond however they want.
2- Emotional reactions are only signs of our impurities or flaws within?
As above, emotional reactions are responses attached to memories and fears.
3- We must purify ourselves (and if so from what)?
No need to remove energy obstructions if you don't want to.
4- Enlightenment is the goal for all human beings?
Whatever anyone chooses for a goal is up to them. Also, everyone seems to declare "done" with different expressions of what "is".
5- Human beings interested in spirituality and practicing spirituality are more evolved than other human beings?
Definitely not necessarily the case. Many "spiritual" people have very large egos.
6- Spiritually advanced human beings have more to offer the rest of humanity than other non-spiritual people?
Guess it depends on what you think the "goal" is.
7- Knowing ourselves as nothingness is the end of spiritual/ consciousness expansion or the goal of enlightenment?
Knowing oneself as nothingness is only half of the equation. One must also know oneself to also be "everything".
8- Unity or knowing oneness with all that is, is the goal and the end of our learning or expansion of consciousness or enlightenment?
Again, goals are for each to choose. But, but oneness with all that is has infinite layers to it. The integration with all that is never really stops. Additionally, one ultimately notices the "fabric" or "framework" of all that is.
9- Our goal is to love all people all the time?
Again, goals are a choice. But universal love is more like "radiating" than loving.
10- We should, with the end of the spiritual journey of consciousness expansion/ enlightenment, feel love, bliss and ecstasy all the time without other emotions being present.
If one is "feeling" stuff, they are translating "what is" into the mind and definitely not near any "end".
11- There is such thing as enlightenment or the end of consciousness expansion?
As above, there is no "end" of consciousness expansion. It is infinite. But one can realize the framework.
12- The goal is love/ bliss, Oneness with God in all moments?
Guess it depends upon how one defines "God". But any definition is itself self limiting.
13- Spiritually evolved human beings are here to save us/ the planet.
There are many very cool beings hanging around. But what they "do" is a matter of perspective.
14- Once we are spiritual masters we can finally escape our turbulent human existence?
With clarity, there is no "turbulent". Just amusing "what the hell" stuff.
My two cents.