No, punch lines don't always appear in real life, that's why we either change the facts or don't write about things that just plain aren't funny. Or if we do, we don't post it in a forum and and ask other people to read it. And no, not all comic strips have to have a punch line, just the ones that are meant to be funny.
Now that being said, you haven't asked us to like your comics, just read and review them, which certainly goes to your credit. A lot of people post very poor comics that get canned and then take offence that people didn't like their work, which isn't what you've done.
What I'd suggest is that if you're going to make comics based on real life, to change things slightly to make them humourous, or use real events to set the scene, and then use a fictional punchline to make it into a joke- this is what I've done on about 70% of my strips, and it works quite well. Alternately if you are set on sticking to reality, perhaps comic strips aren't the best medium to use (nobody takes anything seriously when it has cartoon drawings). Otherwise forget being accepted into the stripcreator community and just make comics for your own reasons. ^_^
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Dinosaurs had eggs bro, the chicken came way later.
