It is completely up to you. If you do update your bulbs you will probably save money in the long run. You don't have to replace all your bulbs at once replace one or two at a time that way you aren't spending too much at one time for new bulbs.
Yes, you can. You could also save energy by buying energy efficient appliances and using energy efficient lightbulbs.
You should check , and/or replace batteries in ,your smoke and carbon monoxide detectors/alarms .
Yes, on an attritional basis, as the old ones burn out-
Depends which kind of lightbulb. Incandescent light bulbs are not filled with gas. Energy saving lightbulbs may be filled with a range of gases. These include Neon, Phosphorus and Fluorine.
take it out and leave it theres no point in saving it
It lessens the amount of heat your heating system has to replace saving you fuel and by saving fuel you save $.
In what way are you saving yourself...?
A variety of stores offer energy saving light bulbs, including supermarkets such as Tesco and Waitrose, and DIY stores including Homebase and Wickes. Online retailers such as Amazon and eBay also sell energy saving light bulbs.
(1) By using less energy. For example, turn off lightbulbs you don't use, use energy-saving lightbulbs, try to walk or use public transportation instead of using a private car whenever possible. (2) By using alternative energy sources. For example, install a solar hot water system - that will save traditional energy when taking a shower.
what should you do if Microsoft word gives errors saving files
you can rather walk or use you bicycle than using your car. replace your non- energy saving light bulbs with energy saving light bulbs.
Your game could possibly still be saving as the cause of the freezing so you should give it as much time as you have patience for since it should be possible that it will finish saving. If waiting doesn't work then you have your answer. Hope you have other save games.