Everyone has a "better" option right at their fingertips. You can go from no options to hundreds by downloading an app.
It's easy to fill emotional voids with meaningless chatter on an app/site/social media.
Easy to find quick sex.
Easy to judge and filter people out on a select set of superficial traits (race, age, weight, height, etc.)
Easy to cheat on a partner with a stranger or look for your other options while still committed.
It made the merry go round of dating much tougher for both genders and I think has put temptation and infidelity within even closer reach.