Why would I?
I have a prepaid cell phone for emergency and convenience calls, which costs $10/month, and time credits accumulate, and I know have over $100. My desktop, laptop, and tablet meet all my communications and information needs. I do not need or use social media.
In case you think I am a Luddite, I am a professional engineer, a writer, I am a management consultant to major organizations. I dabble in photography and videography, and RC aircraft and drones.
Frankly, a smartphone offers me no benefit (except in the hot-spot idea for traveling) and the costs here in Canada are ridiculous.
A final comment, I am amazed to see the fixation of people on their devices. For example, recently at a restaurant, a family of four, parents and children totally silent during the meal, watching their phones.
Not for me.
Does that help?