Prepaid sounds great unless you ever want roaming, it’s either straight up not possible or priced in a way that makes it impractical.
A couple of months ago, I traveled to Belize with my iPhone 14 Pro, which only has eSIM. The websites for the two local companies said that I could buy them at a local store but none of the stores at the airport sold eSIMs or SIM.
Mint Mobile offered me 10GB of data for $40/week. Plus fees, as it turned out, so total of $42 or $43. I took it because I couldn't find a local solution and it was only about $20 difference.
I was happy with the service. My wife uses prepaid Verizon and it was $10/day for their service in Belize which is more in line with what I was expecting. We ended up never feeling like we needed to turn it on.
Half of the time we were in the mountains where there wasn't any cell service so I only ended up using about 1GB of cellular and the rest the resort's WiFi there. But it was nice to be able to search on the road for restaurants, coffee stops, etc.
On a trip to Croatia and Italy a few years ago, the situation for local SIMs was confusing enough that I ended up not using any cell service, just downloading maps from Google Maps in offline mode from the hotel WiFi. Worked great with just GPS but only for places I'd pre-selected - no searching for anything.
Cheaper and better coverage too.
I once did the 30-day Global one for I think $20 for 4GB or so. Worked all over Europe + Middle East. Was very impressed.
My two work trips a long time ago, I managed to get prepaid sims abroad that worked enough.
Pretty much nobody offers meaningful domestic roaming anymore, no matter the cost, so while I'd love that, I'd need a dual sim, dual active phone to approximate it, and I don't care about dead zones near me enough to do it. But my spouse and I are on different networks, so if we're both somewhere we rarely both have no coverage.
Some people use a lot of mobile data - but I'm on my phone all day/night for business and pleasure, watch a lot of video content etc, but usually am within Wifi range of my home or office. I struggle to use more than 6GB of mobile data per month...
Before switching to Visible, I worried a lot about prioritization etc. After switching from Verizon (proper) -> Visible, and I can honestly say I haven't noticed any difference in performance. My bill is significantly lower though, which I do enjoy.