Solid points- it's definitely true that like any entertainment medium, unless the artist chooses to remove and make unavailable the content down the line, once something is done it's "done" and you now have that product to flaunt as long as you would like to~
However I guess a different way to put the feelings behind my original statement would be:
I could have 1 million readers, but at the end of the day I'm also a reader of my story- and perhaps the most important one since my satisfaction with the project is the driving force behind continuing it or not (as someone who does this as a hobby and not as paid work, of course lol).
From that perspective, laboring hours each week to produce a single page- a single snippet of the story and the final product, is a bummer. Not a deal-breaking bummer, mind- I knew prior to making my more recent works at least how long comics take, maybe not my earlier endeavors when I was younger as evidenced by the length of those stories
- but a bummer nonetheless.
In that way, I find the time to produce a comic a con- even "measuring" it by fun (which I definitely find making comics to be :D). If I was primarily concerned with telling a story, novels are a faster way to do so. If I just wanted to draw cool pictures, then drawing standalone pieces can produce equally stunning results and also get completed in a shorter time-frame.
The caveat is that there are also ways to mitigate that feeling within comics too- working on shorter stories gets you do the finish line faster, which for me at least alleviates some of the above feeling (and is why I've mostly worked on short projects in recent years~ It's only now with several of them under my belt that I'm thinking about embarking on a longer series), or of course, with the art being the most time consuming part simply reducing the quality of the art to increase speed right away is also an option. I could simplify my style, or make do with clean sketches over finished line work, or removing the shading and go to flats, or work in grayscale, or work in black and white, or reduce the amount of backgrounds I include...
But all of that does go back into what makes making comics fun for me
I like drawing comics in a style that takes some time to produce, and going through and coloring all of my panels, completing them with effects and shading. The con of taking a long time gets coupled with a pro of seeing my skills level up and having a quality product in my hand (or on my screen lol...) at the end~
To that end I would stand firm by my initial statement that it's a con for me, but not that it has to be for everyone, and certainly that it's not a big enough con to deter me from pursuing my hobby~