Originally posted by biz-engineer So now I have 9 lenses but there is no way I can use them all, it's just too much to carry around. But at the same time if I sell some lenses to lighten up my kit, I'll feel like I'll not be able to cover all my use cases.
That's your problem. You don't carry them all around - say what use is the 150-450 when you're doing street shooting? Or the DFA* 50 when you're specifically out to shoot birds in flight?
That's the beauty of ILC systems, you take what you need/want for the specific outing. Personally I've settled on a modest collection of 6 lenses to cover 99.9% of my use cases, but I'm never carrying them all around at once.