Are SLR and micro-single photography really necessary in the later stage? Personally, I think my straight film is also quite good.

This is necessary. It is said that it is not difficult to do one thing well, but how well it can be done.

So maybe your photos are good, but they can be better after post-processing.

As far as you are so sure, it can be seen that you haven't figured out what digital photo post-processing is.

Post-processing has three main purposes:

1, the adjusted photos are more in line with human vision-for this reason, the post-processing is to make the photos more "real" rather than distorted by ordinary people;

2. Artistic sublimation of photos;

3. Optimize photos taken under various harsh conditions. For example, if it is too late to compose in a snapshot, it is necessary to compose later.