As designers, we're often looking for design validation - some response from the world that our design is 'right'.
We show our design work - even designs in progress - and hope that whoever sees our work will show a glimmer of delight and tell us how creative we are.
Instead, the people who see our work often respond with, "Hmm, well how about this? Why didn't you try that?"
And our blood boils. And we think to ourselves, "How dare they question my design? MY design?!"
Let me stop you right there.
The people giving us feedback are doing us a huge favor. They're exploring options that we hadn't considered (or options we considered and dismissed). This expands the range of solutions, which may or may not be better than what we have created. But it's our job as designers to either filter out these solutions or explore them.
Only in doing so can we find the optimal design solution.