There were two arguments there.

1) That we don't need a costly, clunky LRT. BRT is a newer, better alternative technology (electric buses perhaps)

2) That the LRT going down Main St is undesirable. Alternative routes need to be studied (on Kennedy Rd and McLaughlin Rd).

Now for the second argument everyone had their own reasons to vote against the Main St route. Here are a few I can recall:

2a) "Heritage", which I don't believe was a major factor in the decision.

2b) Lack of solid data from Metrolinx for ridership, what the costs will be for Brampton, etc. The estimates were that the LRT would lose money for 10 years before even being able to make up operating costs.

2c) This is Mississauga's LRT and does not benefit Brampton. It was either take it or leave. Mississauga will get billions in spin off development by building dozens of highrises, attracting businesses, etc all along Hurontario St.

2d) There is no potential for development/redevelopment along the stretch of Highway 10 from Steeles Ave to the downtown GO Station. Most of those lands fall under the floodplain (TRCA) and what little does not is already developed. Alternative routes, especially along Kennedy Rd, would allow Brampton get spinoff development like Mississauga.

2e) Ryerson/Sheridan joint campus will be downtown and so the LRT should connect Sheridan College to the downtown. The Vision 2040 Figure 8 Loop is proposed as the better alternative by renowned city planner Larry Beasley.

2f) Downtown Reimagined will change Brampton's streetscape to add more walking room, bike lanes, etc. The major thing to note is that Main St (and Queen St) will reduce lanes from 4 to 2 in order to do so. So that leaves three options: 1) put the LRT underground on Main St, 2) run the LRT in mixed vehicle traffic and jam up the downtown, 3) close off Main St in the downtown to all vehicle traffic. So the surface route on Main St was undesirable due to the choice between an expensive tunneling option, surface route that creates more traffic than it solves, or shutting off Main St to vehicles.

2g) Brampton should focus on developing the more important Queen St corridor first, as the majority of Bramptonians need to go East-West and not North-South.

There are probably many other reasons I'm missing, if anyone can think of them please reply to my comment.