If they are single. Many times even women who are in relationships make Tinder profiles to have a good laugh with their friends.
The bottom line is, we have significantly better chances with women we meet through other channels. With the exception of one 55 years old women, pretty much all the people I know met their spouse/girl friend through other channels. The data also corroborates what I am saying. Only around 25% of married people met their spouses online(under the age of 35 I believe). So
@Xander94 by not employing other channels, you are squandering channels that vast majority of people employ to meet their significant other.