I use indicators. As bramble said before, indicators are merely derived from price and highlight things that you could easily miss. More volume on up days than down days etc, the trend without the noise, the current price in relation to recent ranges.
Its all there in the chart, an indicator just highlights it. There is no us v them, no darksiders... just those that use a highlighter pen and those that dont. For swing traders, I'd say its necessary. And for novice traders I'd say that an indicator helps prevent subjectivity. You can read many different patterns into a chart and just get confused, an indicator highlights patterns and focuses attention. An indicator is nothing mystical or magic, it is merely price movement seen at different angle. It IS price movement. If an indicator gives 'false' signals its because you are reading things into it, it is impossible for it to give false signals.. it merely is reflecting price. The inherant randomness of price casts its shadow on its derivatives also.
There are so many different people with different attitudes and opinions. Use what works for you, but dont assume that it is the only way there is. If you tried an approach and it didn't work, all you can conclude from that is that it didn't work for YOU. Use what works for you, but dont assume that its the way for everyone and feel justified in criticising them.
I know what works for me and I use it and allow others to do what works for them. That is the way to peace and happeness.