I'm very sorry for content-makers who've hitched their financial wagons to ads, I wish things were easier for you, I really do, but I'm not going to view ads, nor am I going to feel bad about it. No more so than if you had made the poor choice of relying on spam for financial support.
Look, a lot of this ad revenue was bullshit anyway. Online ads have not been very effective historically, but people were still willing to pay for them and that pumped a lot of money into any site with a lot of traffic, regardless of whether or not the ads on that site actually worked. It turns out that visitors have started blocking ads before people started figuring out how crappy the RoI on those ads actually were, but that money was likely to dry up one way or the other eventually.
There are plenty of non-obnoxious ways to do product reviews and endorsements that can still bring in revenue (that's the laziest option) but there are also a ton of excellent options out there for content-creators to gain financial support without relying on ads. It's easier than it's ever been to earn a living without ads and it's only getting easier over time. If you're a web-focused content creator in 2015 and you don't have something for sale on your site (even just "brand" merch), don't have patreon set up, and don't have plans for crowd funded projects then you're making a huge mistake and leaving a crap-ton of money on the table.