It is more and more common for new vehicles of all kinds to come without a spare. Tire quality is generally very good. I have only had a couple of flats in the past 20 years, and all occurred during the last 20% of tire life. If you keep up with maintenance and timely replacement, the likelihood is quite low.
Most people don’t stray far from the beaten path or out of cell phone range, so roadside service plans are an acceptable substitute. The savings in tire waste is a significant environmental benefit.
However, if you do stray off the beaten path or away from cell phone service, or if you live and/or travel in remote areas where roadside service could be many hours away or unavailable, there is good reason to be self-sufficient, including a spare and the tools to use it.
So... it depends.
We’re rural dwellers and have full-size spares on most of our vehicles, including our Chevy Roadtrek. It lives neatly under the rear folding sofa, with plenty of room inside and around it for storage. (We removed the rear continental spare carrier for towing.)
2014 Roadtrek 190 Popular
2008 Scamp 13