Because I just blindly believe that Klaroline WILL happen and be ENDGAME.
When I read a spoiler about Stefan finding a new girl and falling in love with her, but won't be a new girl at all, like we just didn't pay attention to growing feelings between them, I instantly panicked and thought about Caroline. And I chose not to believe that spoiler. But! After 4x22 I just can't help but think that it will be Lexi. Look, he was so disappointed that he hadn't seen her. And left Caroline alone after all the chaos that had happened in the Grille, just to have some alone time with Lexi. And Paul and Ariel have great chemistry, please don't deny it. Even in the moment in the promo those two just scream "sexual tension"
Almost in all her interviews Candice said about the finale that it will give the series a new beginning. And maybe what she meant is that not only one character will come back, but more. And it would be a great move, because ratings are suffering from the loss of our fav characters. So I think that maybe Lexi will also come back. And then after all the Petrova doppelgändres' bullshit that Stefan has had to endure he will realize that the only time when he was happy was when he was with Lexi.
So I will ship Klaroline no matter what. Even if they ruin it with new love interests despite all my faith in the sanity of writers, I will ship it till the end of my days and beyond. And I will continue to ship Steroline bromance, because it's really cute.