I think it is better to just come up with your own content. Most of those type of programs that are designed to make things easier, really just make things more difficult. You are right. The more you write, the more practice you get, and the better you’ll become. I have been writing for years myself, and I have never needed any content generation programs.
He saw a trainer nearby and inquired why these animals made no effort to get away and just stood there. “Well,” trainer said, “when they are quite young and much smaller we use exactly the same size rope to tie them and, at that age, it’s enough to hold them. They are conditioned to believe they cannot break away, as they grow up. They believe the rope can still hold them, so they never try to break free.”
Quality readable content is key here. Google, for example, will recognize that people are leaving your site soon after arriving if they perceive that your site or blog is full of junk content. This is called "bounce rate." If your bounce rate is high, then people are quickly leaving your site. But for the sake of your business, to build your online reputation and brand, you want people to visit your site, stay for a while, and then keep revisiting over the long term.