Agree, for me is easier to quickly find answers going directly to chrome's url/search bar, type my query and find the answer either in SO or Wikipedia. Even though SO and Wikipedia's search engine are good, they certainly aren't better than Google's, and yes, they're great information resources but they are not the whole Internet, maybe 15-20% of the time I find answers somewhere else.

Likewise. I will often use the site: operator in Google searches if I think it will lead to more interesting results, although a lot of the time, those results will pop up high in the SERP even without the qualifier.

Wikipedia generally takes care of itself. However, I find the qualifier is sometimes useful for StackOverflow and HN. E.g., if it's programming, then SO. If it's a more general industry or platform question, then archived HN discussions will likely be interesting and lead to other links.

However, I do use Twitter search from time to time. Due to its real time nature, Twitter search gives you a different view. It's useful for watching breaking news, even though the short URLs will sometimes annoyingly lead to the same articles posted over and over.