This is it indeed. This describes my mentality and I was convinced that EVs need to be doing 300 miles + range to become mainstream. As your actual experience grows, you will revise that range anxiety down, not up.
200 motorway miles in worst case conditions is enough for me, when coupled with ~100kw charging and (most importantly!) a reliable charging infrastructure. The e-Niro already pretty much ticks all those boxes; it's just the infrastructure which needs work!
Most modern cheap (sub £27k) EVs can do over 200 summer and over 150 winter miles. It’s the infrastructure that matters for longer range trips because as you alluded to, doing 300 miles in one day would be about 5-6 hours driving in the UK.
I mean who in their right minds would be doing 300 miles in a day anyway.
The problem isn't doing 300 miles in a day - it's going somewhere 200 miles away with no charger, and then needing to get home a day or 2 later! It's a non-issue if there are destination chargers, but if not it can be a bit of a pain needing to schedule some time to charge the car - this is where sufficient reliable rapids are needed en-route.
While it's definitely getting better, there are still areas with poor coverage.
Went for a long weekend camping trip last week, to a very remote campsite on the Welsh coast. Nearest rapid 15 miles/30 minutes away, and in the wrong direction. Nearest site with more than 1 charger, 40 miles/1 hr 10 mins, also in the wrong direction! Nearest destination chargers, 6 miles/15mins, so too far to leave the car and walk back.
Fortunately we found a rather nice beach in a town with 12x destination chargers relatively nearby, although it did mean we had to park a bit further away from the beach than we could have done otherwise. If it wasn't for that, then I would have had to take 3-4 hours out of the holiday purely to charge the car.
Actually thinking the most sensible option would be to get a cheaper, shorter range EV for the next one, maybe a 40kwh Zoe again, or Leaf (or standard range MG4 depending on the price at the time), as we're considering getting a van as well. 150 miles would easily cover our day to day usage, and for those longer day trips, most of the time the car is loaded up with stuff anyway, whether that's camping stuff, suitcases, beach stuff, bikes, dog, etc. While it's doable with the Niro, it does mean putting stuff on the roof (and people's laps!) which obviously impacts the range quite significantly - a van would be far more suited to that type of usage, and to be honest, with the cost of public charging, filling with diesel isn't going to be any more expensive!
A single EV van would be preferable, but there's nothing really suitable on the market. The Vivaro eLife (and similar from the other Stellantis brands) would be perfect, were it not for the fact they barely do 100 miles, even though they have 100kw charging, you'd realistically want to charge around 15-20%, up to 80%, so a "useable" charge between stops of ~60%, which is about 60 miles on the motorway. You'd end up stopping to charge every 45 minutes!
I don't think there's another option with at least 4 seats, except the ID Buzz, which is a) fugly, & b) expensive
