I got mine in 2017, and there are many reasons why I want to get it, on top of the obvious model upgrades. First of all, my 2017 one is quite old, the stand is broken, the micro SD slot doesn't work (meaning I'll automatically get double the storage from upgrading), all of the joycons have stick drift, and it also just 'feels' old and uncomfortable to use, all of which is due to lack of proper treatment and care, considering I share it with youngsters in my family.
That brings me on to my next point, being that this means I will not only have a fresh and new switch to enjoy all the new features and feel like I did back in 2017, but it also means I will have my own switch to myself. I can link this to my PC setup, connecting both audio inputs to my headphones by turning the switch audio into a microphone that plays through my PC audio output. Overall, it'll just feel real nice to have my own switch, that I don't have to share with anyone on holidays when I don't have my PC as entertainment, and won't get worn down and ruined like my current one due to the lack of proper care.
The new features, like the stand, amazing screen, battery life, and storage, along with the extra benefits I get from not having broken and old parts of a Switch*, altogether makes this purchase seem a whole lot more beneficial than just replacing a new version of the original switch, because this is basically just like replacing a phone that has been worn down after 6 years, and I get enhanced features on top of that.
The only concern that I had was that I may regret it when the Switch 2 supposedly will release next year, but then again, I don't need to buy that straight away, until a lot of the newer exclusive nintendo games rely on the Switch 2's upgraded hardware release. The only other factor stopping me from buying it was the fact that I want to upgrade my graphics card in my PC from my 2060 to a 4070, double the cost of replacing my switch with the OLED, but I figured that I should still be able to afford that PC upgrade halfway through next year, and I don't desperately need the gpu upgrade right now so I should be fine to wait until then, whereas the OLED will be more useful for me now considering I'm about to go on holiday for 3 weeks without my PC, where I will use the switch in handheld a lot more, and the oled will improve that experience.