Hmm, personally I see online dating as one means in many of meeting people. I wouldn't consider it sufficient in itself, but wouldn't discount it merely because of its problems.
Not that I can claim to be a resounding success or anything, as evidenced by:
https://forums.macrumors.com/threads/185226/
But, I've noticed a few things while meeting girls online and in daily life. In online dating most girls seem to want to email/message back and forth for a couple weeks to figure you out a bit. And then, if you invite them out, they'll give a phone number, and you can meet them in person. So, you'll typically spend hours and hours on someone before you meet them. At which point, you'll probably only need 5 minutes to see if you're interested or not. This process requires patience, which is probably why many people get frustrated. Plus, these girls (probably same with guys) are meeting other people online and in daily life, so things can just fizzle out as they start seeing someone else. Or worse yet, they keep messaging you while they have a boyfriend, since they like the attention. Being an online guy makes you less of a priority than someone that they've met face to face. Plus, because these things are geared to helping you meet a bunch of people, many girls are trying to keep track of 10+ guys at once, so good luck with them remembering you if you're not memorable. Plus, a lot of people who date online do it because they don't have time to meet people in daily life, due to work, school, kids. So, who's to say they'd have time to properly invest in a relationship anyway?
Also, for me, I prefer to talk about important issues and personal stuff face to face, eye to eye. I think it's more meaningful, and more rewarding in person than via any other medium.
So, with all those drawbacks, why do I still do online dating? Well, I've met some nice girls, and had some nice dates. Also, I'm more comfortable openning up with girls than guys as friends, so I've actually made a several friends who are pretty cool. And I've since found that I really like writing. Having to make memorable introductions, getting opportunities to tell funny jokes and stories, and being able to just say wierd **** without too much fear of offending anyone, can be liberating creative times. But mostly, I think it's a nice way to connect with a number of girls, while I'm doing the real work of meeting girls in daily life that I'm going to actually date.