Frustration

I am really frustrated with my kids right now and I'm not sure what to do about it.  They seem to have an attitude that everything is disposable.  It doesn't seem to bother them when something breaks or is ruined because "we can just get a new one" said with a shrug and a look like "duh mom".  And part of me thinks they are right they are just things, but the other part of me, the one that knows that there isn't money to get a new one and that I saved to get that one is livid that they could be so callus about all the hard earned money and time and effort that it took to get it.  We don't have a lot but we do have our house and it feels like my kids are bound and determined to destroy it bit by bit.  I don't want to burden my kids with out financial issues, I don't want them to stay up nights worrying like I do but I want them to appreciate what they are given and what they earn and I want them to take care of what they have.  I know that I'm venting to the air right now but I just don't know what else to do.