Switching to LED light bulbs?

An electrician friend was over and we were talking about light bulbs. He convinced me to buy LED bulbs and switch out my old ones. Is it worth it to go ahead and change them all (from a savings on electricity bill perspective) or is am I ok to replace as they go out? I’m having a hard time justifying throwing out perfectly working bulbs… https://solitaire.onl/ https://9apps.ooo/