It does matter, depending on your motivations. If you think the reason for living is that you're a great person whose continued existence will benefit society and/or your loved ones, then sure, it doesn't matter as long as the copy is identical. If you simply want to stay alive and experience/enjoy more of it, then having a bit-for-bit identical copy might not achieve your goal.
For the latter option, consider the following thought experiment: suppose say you want to do an enjoyable activity, such as going on a one week vacation, but you can't afford it. Would you pay 50% of the cost (which you can afford) so a clone of you go on vacation?