Adwords. Still worthwhile?

Hi,
I have been absent for the board for almost a decade. Back, when I was active, amongst other things, I ran Adwords campaigns as an Amazon affiliate.
Coming back today, I see that the Adwords section of the forum appears less active that it used to be. This leads me to ask if Adwords is still worth a go? Is is still viable for pushing one's niche, or as an affiliate?
Sorry if the questions seem daft, but I am just brainstorming with the hope to getting back into online marketing and the...

Adwords. Still worthwhile?

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