Joining Indian defence force should be your decision. You need to have clarity on why you need to be part of it and what you have to offer the organisation.
You relatives / neighbours / girl friend or boy friend will have different perspectives, don't set your dreams only for them. You are the one who is going to live that life, so it's important to take your own approval.
Think about it and let me know why you want to join the Indian Army / Airforce / Navy.