Good idea, then a prime minister who was probably only elected by less than 40% of the people can do all sorts of cool shit whenever he wants without any opposition at all!
i'd feel much more comfortable about a conservaitve government if I knew that we had an elected and capable senate that could tell them to fuck off once in a while.
A senate ensures that fluke election victories by extremist conservative parties doesnt result in a massive reshaping of our country in a short period of time without any political opposition.
Right now we are lacking this,a nd it is not good for our country. Abolishing the senate would only make it worse.