Both have some positive and negative impact on using or saving to you. Cash is relatively better than Bitcoin Because of availability and acceptability at everywhere. But in terms of security cash is not better than Bitcoin. Not only that but also in terms of profit Bitcoin always better than Cash. So both can be a great source of money in specific field.
Okay cash is instant and is accepted pretty much everywhere but you cannot send it everywhere (for a relatively low fee) or use it in every country. Adding up to that, money can be printed upon demand, bitcoin can't.