I haven't really taken to Singapore's MRT and LRT system as I have that of HK, BKK or KL maybe because our trips here are pretty short so we'd just take the taxi (or use Grab) - since the island is pretty small anyways.
However, since my cards weren't working, I had no choice but to take the MRT to the venue of Belinda Carlisle's concert and voila - I found out that it's much much cheaper (of course!) to take the MRT and it's not difficult to get around.
It would take twice the time but at around 1/4th the price. Plus, you can see street fashion - and there were a lot of young people dressed up these days!