i understand why you think that way but the reason for it is because you jumped in something entirely new which you have never used or seen before and confused about the new concepts of it. for example when you sent your transaction it immediately reached the destination within 1-3 seconds. this is not at all like bank transfers which can take hours to days to complete (new concept). then the confirmation which is when transaction becomes irreversible took about 20 minutes which is again unlike banks where it takes a couple of months for it to become irreversible (new concept).