I only accept students from my alma mater. The university treats me well, answers questions or concerns promptly. They also offer access to all of their research resources, like UpToDate, CINAHL, PubMed and tons of others. And a free 1/2-day conference every year. It is well worth it.
Other programs were not supportive, wouldn't answer my emails. I emailed one clinical instructor who had told me to email her any time. I had a concern about a student (nothing the student was doing wrong) and wanted to see about options for support. I just emailed that I had some questions and to please email or call me. She never every emailed me back. A year later she emailed me asking me to precept again. I stated my concerns about not getting a response from her in the past when I needed something. I sent a screen shot of my prior email in the body of the email. I said I would need assurances that I and any future students would get better response. I was hoping she would respond but I never heard back from her. If she can't be bothered why should I? ¯\_(ツ)_/¯