What is one reason why many geologists did not at first accept the theory of continenal drift?

Continental drift is the theory which states that the continents of the earth moved away from each other over a period of time. It is believed that this theory was opposed by many scientists because they stated that there weren't enough evidence of mechanism to prove the drift between the continents.

However, it was also rejected because this theory opposed many ongoing geological theories like geosyncline theory, uniformtarism theory even when sufficient evidences were there to prove the continental drift theory.