I don't have one, but I assume it's a better Switch. All the existing games work on it, some with enhanced versions (but probably load times are better anyway, right?), and there's new games that only run on the Switch 2. Switch 1 releases are likely to dry up over time.
So many people (hard-core gamers) thought the switch would be DOA when it was announced. Nintendo just doesn't target those. I assume the same here. People also thought no one would be interested in the steam deck either. You know, because it was just a slightly better switch. People really don't understand how small the hard-core competitive gamer market is. Literally no one I know plays competitive online games and we all spend hundreds of dollars on steam a year. Valve is targeting us.