There is not any reward to using legacy address. However If your provider you are making use of don’t support SegWit/Bech32 withdrawals then you may want to use legacy address. Afterwards you can transfer BTC out of your legacy addresses to SegWit that starts with bc1. From the window that https://forum-directory.com/listings12700914/the-ultimate-guide-to-finance-vanity-address-generator-online