Take a look at my join date, that's when I first started 3DS hacks. I know it's not that long ago, but it's still a long time.
I have NEVER bricked a 3DS before in all this time! It's not easy to brick, you'd have to really try to brick in order to make it happen. Once you're done setting everything up, all you literally do is install Cia's and play games. What more can you do to brick at this point?
I'm not afraid of bricking my sysnand, especially since I made a Nand backup, and backed it up on a few sites. I'm also not afraid of bricking because it's SO uncommon, you'd have to be very stupid to actually brick somehow.
Anyone mentioning bricks on sysnand, just stop being afraid. Nothing is gonna happen, everyone has common sense enough not to brick. Even if something required you to do something dangerous, there's always a guide on how it's done. I personally think the only brick-prone part is downgrading. After that, you're pretty much brick proof. The only bricks that happen after that are from stupidity and noobity (Made up a word)
Bottom Line, updated sysnand works perfect for me and I'm living the good life with a 128 GB SD and the latest AuReiNand. It doesn't get any better than this and NOTHING is gonna happen to me.