Yes, you're probably right, but the reason I started this thread is because I've been writing for four years and yet to have sold a piece. I have finished two novels and probably around thirty short stories. I feel if I'm not going to get published, it makes no sense to write if it's not fun. In fact, the day writing fiction isn't fun anymore is the day I quit writing. It makes no sense to work on a boring project if it's not going to sell, but I suppose I'm being pessimistic.
I'd quit if writing stopped being fun, too, but the fun has to be in the writing, not in the selling.
Honestly, two novels and thirty short stories isn't very much writing. I know some sell the first novel they write, or the first short story. I'm one of them. I wrote the novel in three weeks, and it sold first time out, and I wrote the short story in two days, and it sold first time out but this is not the norm. And I received plenty of rejections after those sales.
I sometimes wish all writers would try something like painting before they started writing novels. It's easier to see progress with painting, and you
expect to ruin
hundreds of canvases before you paint anything worth selling.
Two novels? Even when you do sell a first novel, you may have to write six, or more, other novels before the second one sells. Nora Roberts sold her first, and then had to write eight more before a second sold, but she's done pretty well since then.
And with short stories, thirty is just getting started. One of my favorite writers, William Saroyan, received more than four thousand rejections before selling his first short story.
I know one short story writer who, much like Nora Roberts, sold his first short story, but then wrote more than a hundred before selling another. Now he's a full-time writer.
Sometimes success does come fast, but the most common route is to write a bunch of novels, or a boxcar full of short stories. Though in today's world, saying a "gigabyte" of short stories might make more sense.
I think you just have to concentrate on the writing, not the selling. The writing is under your control. For the most part, the selling isn't. There are things you can do, several things, to make you stories more salable, but it's the writing that matters. You must enjoy the writing, not what happens after a story is finished and submitted.
Easier said than done, I know. I really don't get bored writing any story, though. I get afraid often, thinking there's no way I can make a short story work, or no way I can make a novel reach the right length when I hid the midway point, but I don't get bored because it's all a creative challenge.
I suspect the project isn't boring you, but that you're suffering the old "dejection from rejection" syndrome.
I don't know what to tell you except try to have fun with what you're doing at the moment, with the creative challenge of turning whatever you're writing into the best possible piece of work you can, not with all the things completely out of your control.