Oh God, I cannot believe it's already been 10 years. (Warning: incoming gush post)
LBP1 will always have a special place in my heart. Back in 2007/8 I wasn't really using my PS3 for much, but LBP was like the turning point for me personally. I was mad hype about LBP because of the user creation aspect (I was in a "crazy about being creative" phase and dabbled in all sorts of things like writing, drawing, music, graphic design etc. so it basically was being released at the perfect time for me).
When it released, I played so much of it with my siblings (I think it might have honestly been the last game we played together in co-op). Most of it was the campaign and unlocking all the pre-made items, but the game really opened up for us when we got to the online (I think it was my first online experience too on the PS3). Was just absolutely blown away by folks making like, homages to other games (like Bioshock and Dead Space), playing these musical levels and I was super impressed by this fully operational tank level. I really wanted to make my own levels, I even drew a few concepts / stage layouts but ended up quitting. I did settle for making bungee jump levels though (I'd put a black matter platform real high in a level, attach some elastic to sponge, tweak the settings and then I'd have Sackboy grab and jump all the way down. It was amusing enough).
Game really was the turning point for me with the PS3. I started to pay way more attention to other incoming titles, and I remember shortly after I got into inFamous, the Ratchet future titles, ModNation Racers, Resistance etc. I was only using the PS3 before that point to watch DVDs or replay PS2 games, but LBP in my mind is synonymous with the period where PS3 started to become a really amazing console (to me)
With the rest of the series, I just kinda lost interest after LBP1. I was super hype about LBP2, and even snagged a free PS+ trial so I could play it. It was fine, but I just never went back to it after finishing the game. I may have burnt out, trying to finish everything before the end of the PS+ trial. After that I think I just outgrew the series tbh (my creative phase had long ended since LBP1's release, and I was just trying to get through high school at that point). I did absolutely love Sackboy's appearance in PSBR though. Even though I personally don't play the games anymore, I still kept LBP1 and 2 for my younger siblings, who are still getting a lot of use out of the games. I even bought LBP3 and LBP Karting just for them.
Anyway, rant over. The short of it is that LBP is pretty important PS3 title to me. I don't really have an interest in it these days (especially not with my overflowing backlog) but I do appreciate the game, and the period that it released in. Also need to mention the soundtrack. I absolutely love LBP's selection of licensed tracks. There are too many good tracks to fit in one post, but here's one track I still love:
The original music was pretty solid too: