Roger
Yes, well said, whatever evil spirits can do or can't do; greater is Jesus spirit in us, always.
The spiritual realm is invisible and we are physical creatures living in the material realm with physical laws, structures and hierarchies, etc,... Who have the time to reflect on something that he can't see, smell, touch or listen?
Well, we should care because certainly these spirit beings can be able to influence our minds and therefore our actions on a daily base.
I like this quote:
No one has ever seen a real demon AS THEY ARE SPIRIT, AND THEY ARE NOT VISIBLE. We are
never told that we might on occasion entertain "demons unaware," as we might entertain angels (Heb. 3:2).
"Angels," however, can be either visible or invisible, and are often called "men." Sometimes they seem to be
manifested as physical men (Acts 10:3 & 30 and Luke 24:4), BUT IN REALITY THEY ARE ACTUALLY SPIRIT
BEINGS. Mortal men when used of God are called angels or messengers which, like all men, are destined to die.
However, spirit angels in Heaven can never die:
"Neither can they die any more: for they are equal unto the angels; and are the children of God, being the children of the resurrection" (Luke 20:36).
(L. Ray Smith /Caps are mine)