It doesn't matter what "it" is, people are always against "it" being built in their back yards. This applies to churches, schools, hospitals, bike trails, fire stations and day cares as well as stadiums, highways and shopping malls. The overwhelming majority of ordinary people don't trust developers or bureaucrats, and figure any change is going to be the worse for them. Also, the overwhelming majority of people I know really wish they lived on a street where the only car that ever drove on that street was their car. They don't want more people, they want to be left alone. The more useful and desirable a new thing would be, the more congestion it would bring. Even a new park will be opposed if it means ball fields and bike trails, the locals only like it if it means useless expanses of grass that somebody else mows.

They aren't picking on us in particular when they oppose the bike trail. They (meaning us, almost everybody) are against everything.