Nice, glad to hear it! I mean, that's basically it lol, but it's a big one. There are a lot of little side effects that will come with having more SP though. For example, I've noticed as you get your SP up, you will notice a steeper gain in followers because they are looking for those higher upvotes. Great content aside, some individuals will follow for that reason alone. It also gives you more influence on who you would like to see succeed on the platform as well.
There isn't really an average for SP, as the range of size is pretty immense. For example, I hold around 2k right now, and I'm still considered pretty small. You might hear the term 'minnow', used to describe a user who is less than 5k SP (ballpark). 'Whales' on the other hand, are massive Steemit accounts, who can sometimes hold millions. Sometimes these big accounts are run by collectives, not necessarily individual bloggers.
But anyway, yeah it's essentially a power thing. The more influence you have, the more you can sort of pave your own success or the success of others, at your discretion. It's a slow burn but if you really want to stick around for the long term, I'd definitely recommend packing on that SP!