May depend on your individual situation. I have to start every day with some tight maneuvring in an underground car park, so there’s a lot of arm input at very low speeds - the assistance from the EPS on my NSX is very welcome!
If I lived somewhere where I could drive straight in and out of the driveway, and/or had a gravel drive, I’m sure I could live perfectly happily without EPS. If EPS wasn’t available I’d probably manage OK, but I’d benefit from more time in the gym!
I’ve seen a huge range of quoted speeds at which the steering assist switches off - from 10mph to 87mph. On my car it feels like it’s around the 30-40mph range, but this may vary with the rack/controller box generations.
IMO EPS gets a bad rap on the NSX. There are cars where it’s done badly - I once drove a 2005 Accord with horrendous electric steering, no feedback at all - but as said, once the assist has switched out then I find the steering on the NSX to be fine. You do have to get used to the steering weight lightening up as the assist dials in in slower corners, which is odd at first, but otherwise I find it well worth having.