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There is another option that is being debated, which is called BIP148 which aims to increase the blocksize so that more transactions can fit inside every block. The thing is, this would only be a temporary solution as when more people start using Bitcoin, we would need to increase the blocksize again and again until it became futile. The reason SegWit is more popular at the moment (over 80% support) is due to the fact that it is a longer-term solution which is what is needed at the moment. BIP148 is like putting a Bandaid on an open wound. Sure, it might work temporarily, but eventually you will need to get it treated by a doctor otherwise it will just get infected anyway and the Bandaid (BIP148) will be useless.