Are you asserting this by definition? If not, the list of those who
believed they were Christians yet denied the existence of miracles extends
back to the Enlightenment (at least). An extremely naturalistic worldview
is part of many current approaches to New Testament studies.
I believe in miracles, BTW, and apparently you do too (or at least in the
possibility of them). But I know of Christian forums where you could start
a giant brouhaha with that statement.
Yours in Christ,
Geoff