The difference is magic and spells come from the Satan. Miracles come from God. Magic and spells seem to benefit more of the first person not others.<quoted text>1) You have some shred of reason. Many people do not. If you go around telling people that prayers can cure cancer there are going to be foolish people who will shun medicine and just trust in God. Those people will die. Therefore it is dangerous to make those claims. I have no tolerance for that kind of reckless bullsh*t.
2) You have a title as a magic man. You say words, and sometimes the laws of nature are bent as a result. That is called magic. Name it what you like, rationalize it all day long, but you are calling yourself a wizard who can cast spells.
I believe that God helps those who help themselves. I would never discourage someone from going to a doctor, even with a blessing or prayers. It is still up to us to do everything that we can do within our own power, and then God makes up the difference according to our faith.