Nam Vet there is nothing wrong with an older camera. Photography is far more about the person behind the camera than the camera itself.
So you do all processing in camera and not on a PC? I don't know the D60 but I didn't realize that it has in camera processing. To be honest I'm moving in this direction myself. I'm working on using in camera film emulations with any modifications done in camera to the emulation. The main disadvantage I see is with respect to local adjustments - can't do them as the whole image is affected - but that said I can do lots of adjustments. I don't for now see this as a huge problem.
I use a fujifilm X-T4 a higher end APS-C. The D60 is APS-C as well I believe. Before this I used a fujifilm X-E1 that I still use time to time. Before that a panasonic before that Minolta xd5 and others along the way. What I luv about these Fuji cameras is all the manual adjustments available in this day an age of digital. It is also the right size weight shape for my hands. I've 3 zoom lenses covering from 10 to 200 (15 to 300 full frame) mm. I wish I could afford/justify a Fuji GFX medium format - lottery come through for me!

Here is the fujifilm link for the X-T4 film emulations. Camera info is there too.
https://fujifilm-x.com/en-us/products/c ... re-colors/
Here is a site with LOTS of of emulations for Fuji.
https://fujixweekly.com/fujifilm-x-trans-iv-recipes/
How these are set in camera is shown - and the user can modify them further. I hope to find a set to store in camera for use in different situations. So far I don't see an Ektachrome slide film emulation - which has long been my favorite.
I don't know how wedded to Nikon you are but you may want to have a look at Fuji. The older the digital model the fewer the emulations of course.
As for me I have been into photography off and on for near 60 years starting way back in 4H. More off than on unfortunately/foolishly but am back into it. I will have to share a few pics.
I've rambled on a bit but these emulations are exciting to me right now.
-Ed-
An edit - I do have some PC based post processing programs but the less I need to use them the better. And yes I shoot raw and jpg.