By proving it to them? Or saying "that's how you two got married too".... welll unless they didn't get married that way...
Do they have certain fears ? You might just tell that you want someone to share your feelings with... and that dating is a way to see if you like each other... and that you will not rush things, but want to form a relationship over time (if thats what you want) Its not like images conveyed from tv ... you just might reassure them a bit...
I think if you are still under age and under their roof, there isn't a lot you can do.. You can talk to them and try to give them your reasons for wanting to date, why you feel it is a good idea, but ultimately.. They are your parents and if you are a minor and living at home, what can you do really? It depends on if they are reasonable people are are willing to hear you out.. Some people are never going to change their opinion of something regardless of how many times you try to convince them otherwise.. Maybe ask them why they feel it is such a risk and why they don't want you to date? Maybe you can both list your reasons for and against and go from there.. I think though if you are a minor, you need to respect your parents wishes and respect that, but I do think you should know why they don't want you to date so you understand where you are coming from.
Hmm, now that is a little different if you are legally an adult now.. I think some of my advice still applies, just really sit down and discuss with them the reasons why they think it's a bad idea and why you think it's a good idea and see if you can meet in the middle somewhere.
No dating = no dating experience when you get older. No dating experience when you have to find a husband = lower chance for good husband. Lower chance for good husband = lower chance for grandkids! Also you might give them this rule: no dating = no complaining about being single when you're >25.
I would try talking to them about it. Reassure them that you are responsible and can be trusted. They are probably scared of you having sex and getting pregnant - I'd fear that too if I were a parent. If you think it may help, you can see if they know anyone who would be eligible to date you. They might be more lenient if they know him.
