It has a lot of benefits.
You can check email anytime from your mobile phone.
You can instantly connect with anyone using various instant messaging applications.
You can stay up-to-date about current affairs of the world.
That was in 2013. I ended up getting a smart phone shortly after because I covered for a building manager whose tenants would send emails with service requests and I needed to get the requests when I was doing other work. Since then, I bought 2 Blackberrys, an HTC and 2 Samsungs. They don't like being sat on, dropped or, sometimes, being used. They are expensive to buy, expensive to use (just shy of $100 per month for unlimited data, roaming, 911 charges and taxes) and I have to turn off the text and email at night because of spam. I also lose a day with every phone change, even moving between similar makes. I get to spend my spare time looking through the spam to see if anyone important got blocked.
Manufacturers quit including info with their product and I have to download it. Reading VFD instructions on a smart phone sucks as does finding the correct model number. Driving to find wireless service is really inconvenient.
Now, a smart phone is necessary. It's better when I need to make a call - not so much when I get a call.