I just want to throw him out the window

Sometimes I get really sick of my cat, Nigel. He constantly wines and would eat 24/7 if he had his way. Then when WE'RE eating he wants to jump on our laps and cuddle. If there is no food in his dish, and he don't respond to him immediately, he eats any peice of dirt or fuzz he can find on the floor, which often leads to him puking on the rug or carpet. Not on the hard floor which is easier to clean, but always on a rug.
The worst part to this is, when I yell at him for being annoying (and naughty), I see and hear myself yelling at our kid(s) when they get older and do something bad, and I HATE the way it sounds. If I want to toss an annoying cat out the window, will I be okay when a baby never stops crying? I know a baby is not a CAT, but sometimes I get scared and wonder if I'll be a good parent.
On to more exciting things...we are going to Hawaii in May! We're going for Lisa and Tim's wedding but we'll stay an entire week. I thought we weren't going to be able to afford it, but a time share opened up for the week of the wedding. We own a timeshare and can exchange it for pretty much anywhere in the world- but it seems like you usually have to book it 2 years in advance to get the time and place you want. We have been really frustrated with it, but it is finally paying off! So we get to stay in a resort in Kauai for about 20$ a day. Then we found ultra cheap plane tickets for they days we were going, so clearly it was meant to be. I hesitated momentarily d/t to the job loss situation, but I felt so strongly that we need to do this. Who knows when we would ever get to go to Hawaii again (for so cheap at least). I'll be 5 months pregnant,super white pale since I can't go tanning, and will have to drink virgin mai tais, but who cares :) If anyone has been to Kauai and has any restaurants or activities to recommend, please do!