Life is what you choose to make of it

Indeed. Life certainly seemed full of simple times pre-covid, didn't it? Countless around the globe are certainly nostalgic for the way things used to be. Your feeling won't pass, nor should it. It's a different world now.

It's only natural to feel that way

I think the vast majority of us miss the more simple times
I certainly do

Yes, that feeling will pass... it will come back again too

I think that feeling is part of life