Obviously there's a trade-off between security and convenience here, and that's a very personal choice to everyone, so I'm not going to argue that part of thing

Obviously there's a trade-off between security and convenience here, and that's a very personal choice to everyone, so I'm not going to argue that part of things with you. I do have to point out a couple of things though. Password managers don't store "hashed" passwords with a third party - they store encrypted ones. I also wouldn't personally use the phrase "in the hopes that they will be able to protect my passwords" - I don't rely on LastPass protecting squat. If their entire database leaked, my passwords are still safe. I think that element of the design is very important and wouldn't use a system where hope was required! You certainly aren't the only paranoid one and lots of people on HN seem pretty wary of password managers :)