Questions: Religion & Spirituality

I wasn't too sure how to ask this so feel fre to answer any of these or all of these also:

Is it outdated?
Is it irrelevant?
Is it helpful?
Is it valuable?
Is it nessesary?
Is it practical?

People often use a statement like angels don't exist but that is a negative and since they claim we can't prove a negative, then you're a hypocrite to use a negative. We can prove physical negatives. We can prove money is not (physical negative) on our table if it is not there. Money is a physical thing. If money is (physical positive) on our table, we prove it using our senses. We can not prove or disprove angels are (spiritual positive) or are not (spiritual negative) dancing on our tables and rejoicing since angels are from the spiritual realm, if it exists, and not of the physical realm. Therefore, it is not on equal grounds.

You don't investigate the physical with the same methods you use to investigate the spiritual. Using a negative statement about something not existing or not being done if it's not a physical question means you are being illogical. Saying demons don't exist is not equal to saying there's no cherry pits in my hand. Demons are of the spiritual and must be investigated by different means and cherry pits are of the physical and must be investigated using the physical. We can prove there are no cherry pits in my hand because it's of a physical proposition. Demons are of a spiritual proposition and can't be investigated using physics. That's a misconception that seculars use when discussing topics concerning the spiritual realm. Please share your thoughts!

I had a user point out to me that I'm in blasphemous affairs against God, stating that using the 3rd in the trinity as a username was mocking God's holy work. I explained to him that I used it to show people that it is excitement spiritually and that they can attain equal excitement too and should motivate them that God left the Holy Ghost for humans to be comforted and taught.

Please let me know if you think I made a spiritual mistake using it and if I am in error or not. If this is sinful, how great of a sinful violation is it and what class level of punishment will it carry? I'm concerned and want to hear your thoughts. Please help point me in the most correct direction.