We find we don't miss ours at all. When it broke we hummed and haa'd about getting a new one in, but after a few weeks of humming and haa'ing, eventually realised that we didn't use it that much in the first place.

If you don't have one already I would get a three tiered steamer; either stainless steel for use on the hob or a plastic electric powered one. Layering your spuds/rice, fish and vegetables to all cook from a single energy source (timings are important, so get a kitchen timer if you don't have one of those) is a really good economical compromise to using a microwave for such things.

Pretty much the only thing we still miss is the ability to zap a too cool cup of coffee!