My mum brought ours home because an old man begged her to buy him from him, so I didn't actually choose to have an IRN at that time at all, I was just living with my mum when she as someone who should never have one brought him home. By the time I left, she was desperate to get him out of her house and we were closely bonded, so naturally I rushed to find us somewhere before it was too late and she'd give him to an aviary. However, by amazing coincidence, before all this happened I was already a parrot obsessive and had decided that IRN was the species I would look for whenever I eventually sought a new parrot to adopt, so I can still answer this question as if it was my idea to get him.
What attracted me initially was what cute talkers the talkers are; I loved watching them on YouTube. What made me think they'd also be a good lifestyle fit for me, were their size (not so small that you can't easily spot exactly where the poops are in a room you've left them in, not so big that I couldn't afford a home big enough for them to fly vigorous laps and somersaults around), and their ability to happily amuse themselves while you're at work as long as you don't cage them, because I hope to never live with another person so velcro-species who need attention all day are a huge no-no.