Quoted from Lermods:In the past 6 years, I’ve replaced one tip, chisel type, and I use my iron literally every day. I keep it tinned, particularly when I turn it off.
I do the same, clean the tip then add some solder before i put it in the holder and turn it off. I don’t use mine as often as some folks on here but mine looks great. I have spare tips (somewhere) that i’ve not needed in 5 years. I prefer the smaller screwdriver type tips, i’ve never used a pointed one.