Speak for yourself. I am very experienced. I have worked at many companies, some of which I left abruptly, and others where my close friends were fired/laid off.
But guess what? None of that matters. Just because a friendship starts at a workplace doesn't mean it ends when the employment ends. Some of my best, life-long friends are people I met at work. My current SO, who I will marry, is someone I met at at a past employer. My wedding party is going to be half-filled with people who I met at work, even though I no longer work with them. I currently mentor (and am mentored by) people from past jobs, one of which was actually fired.
This is also a self-fulfilling prophecy that I see in these conversations. People begrudgingly make nice with people at work, and restrict those relationships to only happen at work... and then are surprised when those relationships end when employment ends. If you only interact with your "friends" at your employer, then no shit those interactions will stop when your employment ends. But they don't have to, and for many people, they don't.
It's not any different than any other part of life. I'm no longer in college, but I'm still close friends with people I met in college, and I don't regret at all the fun activities I did during college. I no longer go to my old gym (I switched to a new gym), but I still keep in touch with someone I met at the old gym and I still benefit from the exercises I did there. I no longer live in my old apartment, but I still keep in touch with my friend who lived across the hall from me. Why should my workplace be any different?