Why do Republicans fear a debate?

When it was apparent that the disasterous party-line FCC ruling which eliminated net neutrality was coming, Rep. Sean Maloney (D-NY18) introduced H.R.4585 – the Save Net Neutrality Act of 2017.

It was promply bottled-up in commitee. A few days ago the Democrats tried to forcent to have a floor debate on the bill which was voted down by the Republicans.

Why do Republicans fear a debate? Why do they not want freedom of choice?