Looking at the number of bills introduced right at the start of the new congress I'm under the impression that many of these are introduced only so the congressperson can go back and say "I introduced a bill to do ____" and brag about it.

https://www.congress.gov/search?q=%7B%22source%22%3A%22legis...

It would be interesting to data mine these and see how effective certain legislators are at just introducing bills compared to actually getting them passed.