* Formal: "Nowadays, the majority of people rely on the internet for news and information."
* Informal: "Nowadays, everyone seems to be obsessed with social media."
* Contrasting: "Back in the day, people wrote letters. Nowadays, we just send a quick text."
* Emphasizing change: "It's amazing how much technology has changed nowadays."
* Expressing opinion: "Nowadays, I think it's more important to be kind than to be right."
You can use "nowadays" to refer to the current time period in contrast to a past time, or to emphasize a change in something.