I've got no patience for anyone who despises people either for their youth or their advanced age.
Sure, you should decide if a person is worthy of your respect or not. But if you're an old hand at resistance, you've got to put some trust in youthful people & fucking hear them. They are the future.
If you're young, you've got to learn from people & expand your knowledge-base & perspective: you haven't had TIME yet to collect a wealth of knowledge. Other people can shorten the process for you.