Fremont St (the Old Strip) is much more enjoyable than the new strip now, because they actually had the balls to pedestrianize the entire thing. It's a much more enjoyable experience; you can walk along at ground level, popping into whatever businesses you want while drinking your beer, and at no point do you have to take a bridge over a giant highway wasteland.
Just compare these two photos and consider which you'd rather walk around in as a pedestrian:
https://en.wikipedia.org/wiki/Las_Vegas_Strip#/media/File:La...
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https://www.playnevada.com/wp-content/uploads/2018/05/New-De...
The traditional complaint I hear is that a random street in Los Angeles looks like https://goo.gl/maps/U7kg8VMV4FtDxQ838 whereas a random street in London looks like https://goo.gl/maps/nR1BJSgYEk5du5CN8 i.e. American cities being built with much lower population density.
That means, if you have one bus stop for every 400 residents or one metro station per 30,000 residents, Los Angeles residents have to walk a hell of a lot further to get to the bus stop or metro station.
Also, the "metro" is great but it can get crowded like any train can during peak. You gotta qualify what you mean by "unless you happen to be on the right line."
I used to walk from Sim Lin Square to Raffles, less than 1km, always regretted it.
Clarification would be if you didn't have to change. If it's a 10 minute taxi or 2 metro changes, I know which I do in SG. I commuted from Haugong via taxi for a month rather than take a bus/metro/bus
[0] not a US citizen but the legend says that cars are too deep into american culture