You should fear dying. That's normal and good. It will make you be careful. Dying sucks. Even the most awesomely dramatic death of an established campaign character leaves you with that horrible "but there was more story to tell/mysteries to solve/unfinished business" feeling. It's horrible.
That said, you do get over it. Usually when you start thinking about the awesome NEW character that you can bring to the next game. And you can get to know a different set of characters and get involved with a new faction and discover that, you know what? That one character wasn't the only great choice for the game. And that it's no less awesome to join an established group than to be there from the start.
And then you get all excited again. And props and costume? Alright, you may never wear the whole thing all at once, but most things you've spent money and time on can be worked into other costumes eventually.