I’m not sure why people downvoted instead of educating. To answer your question: no, it isn’t. It has been awhile since I’ve used torrents, so this may be a little out of date, but typically, within your P2P client you’ll have active “seeds,” including while you’re downloading. Some people immediately delete files from “active” after their download is complete. It is generally considered proper etiquette to leave the torrent active (at least) until it you have uploaded approximately 2x what you have downloaded. This helps keep torrents active and relatively quick, while not placing the bulk of the bandwidth burden on a few seeders.
I’m not sure why people downvoted instead of educating. To answer your question: no, it isn’t. It has been awhile since I’ve used torrents, so this may be a little out of date, but typically, within your P2P client you’ll have active “seeds,” including while you’re downloading. Some people immediately delete files from “active” after their download is complete. It is generally considered proper etiquette to leave the torrent active (at least) until it you have uploaded approximately 2x what you have downloaded. This helps keep torrents active and relatively quick, while not placing the bulk of the bandwidth burden on a few seeders.