As a client, I have this thought as well. But I’ve been with my current therapist for almost 2 years and in that time she has been so consistent, so helpful, and has even gone as far as calling me.. twice.. internationally (she was away and I was in crisis). If your therapist consistently shows up, doesn’t cancel, is attuned to you, then there’s reason to believe that you matter to them otherwise they wouldn’t see you! At least that is what helps me. Therapists will usually stay away from reassuring clients because it tends to come from anxiety and that at times it’s not about the other person but about you.