I do not think that many people is against bitcoin, where did this
information come from? People may be ignorant but that does not
mean that they are against bitcoin. Using traditional currencies is a
habit, they will need a time to learn about new things.
If anyone is against bitcoin than it is a minority of bank owners,
and circle of people who earn from keeping people under the control
of central banks. They are the only people who are against bitcoin
idea.