I think this should be put more simply. This is the only wallet that has a developer fee, and so this is the only wallet that makes you back up your wallet perhaps daily or twice daily to avoid the chance of not losing all your coins?
Nobody is making you back it up daily or twice a day... it is RECOMMENDED that you do after each stake because of the change address that gets generated. You can either do that or coin control if you want to safeguard your coins.
And as previously explained, the dev fee is to help the team fund the projects that are in Buzz's future - there was no ICO, the current team haven't benefitted from any premine, so for the coin's future, what other options are there?
staking with more than 100000 coins from 26.01.2018.
using new wallet ver 3.1.1 from 4th February 2018. but still not getting any stake, only orphaned blocks.
anyone pls reply, how much time required for getting stake with 100000 coins?
Orphaned blocks are bound to happen because of the number of wallets trying to stake. It's normal. Please refer to the FAQ section on the downloads page of the website...