not wanting to do a year abroad

Hi all, I'm in a difficult position, I received an email to tell me that I've been offered my year abroad at my chosen university (I applied when I wanted to do it but now I'm unsure)
If I accepted the place but then decided to drop out of it would I receive some sort of penalisation? Like a fine or a warning that I won't complete my degree? This may sound so silly but I'm genuielly paranoid that this may be the case.
My degree has "with year abroad" with it and my tutor said if I decided I didn't want to do the year abroad that I could obviously drop out but "it would be a hassle for many people" (very evasive wording)
Has anyone dropped out of it or gone abroad and decided to come home? I would love to hear your experiences and advice