Nobody needs an iPad. I have an iPhone, iPad, PC, old MacBook Pro, and Kindle, along with various other electronic things. The iPad is my most used device by far even though everything I do on it could easily be done on a PC/MBP/etc. The ultra portability of it and the easily attachable/detachable smart keyboard (only available for the iPad Pro mind you) are what I love most about my iPad Pro. It's just productive enough that I never use my laptop anymore.
If I want to lounge on the couch and read the news, watch a video, etc, I reach for my iPad. If I'm traveling for personal reasons, I bring my iPad instead of a laptop. If I need to remote login to my home server (I SSH into a bunch of different machines all the time from my iPad) and do some stuff on it, I use my iPad instead of my MBP or PC. If I'm watching TV and want to look something up on the internet, I reach for my iPad. If I'm lying in bed and want to read for a bit, I reach for my iPad. It's my goto device.
Heck, I've even used my iPad to do some minor web development (which I tend to do on a remote server and not the actual device I'm using) while on vacation. Granted, a laptop is a much better tool for this but the iPad was all I had and it was a work emergency. I wouldn't want to work like this all the time but it worked just fine. The fact that I could get away with an iPad to do this was a big reason I chose to it over buying a new laptop.