I'm not a subscription fan either but if you write a lot and it makes your life easier, I can't imagine griping over 40 bucks a YEAR.
I write a lot. I wrote thousands of words yesterday and I wrote thousands of words today. I write for work as well as side projects. Until this week I've used Pages and Google Docs, both of which have their pros and cons.
But Ulysses offers full markdown support, lots of very useful options that don't exist in Pages or GD, can upload directly to sites like Medium (which I write to, and get paid more per month than Ulysses costs per year), and keep various projects grouped together with their notes and research.
By all means, don't get it if it doesn't fit your needs. But if it does fit your needs and you're complaining about something that costs as much as a single cup of coffee each month to make your life a bit easier on a device that cost 4 figures, you need to look in the mirror.