Why so many posts per page?

I apologize if this has been covered, tried searching but nothing.

why are there like i think 40-45 posts per page on topics? it makes it a real pain in the ... to scroll down to find the posts that happened from the last time you checked out a thread. instead of having like 10 on a page or something and knowing you left off on page 3 or something so you dont need to scroll through the first 30 posts before getting to what you last saw...

hope that made sense

 

but when youre subscribed to a thread, and someone post something and is post #30 you go read it...come back an hour or 2 later and its at 36 posts you have to go all the way back down rather than just hitting last page

 

ahh, thank you
yeah it gets so insane when you have 50 posts, everyone posting images, everyone else quoting that post with all the images...having to scroll through them all over and over again just to see their one line of text that says something ridiculous like "hey whats that clock widget" that has already been answered 5 times in the same thread...