Changing from gas to electric for the stove is not too difficult - obviously you need a new stove, and if there isn't already a 220 volt line to the kitchen you will have to have an electrician install one. As for the heat - you're talking about a whole new furnace unit, or perhaps electric baseboard. This could cost several thousand $$.
I would encourage you to stick with gas, and not make the change. In general, gas is more efficient than electric, so costs less to run. Plus, personally I find that a gas range is much, much better than electric - you can control the temp setting much better. I believe that homes with gas have higher resale value than those that don't.
You shouldn't be to afraid of gas. Problems do occur, but then again people also get electrocuted! Use common sense, and you will be quite pleased with gas heat and cooking.