Do you think it's time for me to get a new phone?

I've had my phone since October 6 of 2015. It's an iPhone 5c and it sucks. The screen is falling out of the pink backing and sometimes when I turn on the phone there's a weird glitch like the screen gets faded and all these lines appear? It's been 2 years and about 8 months. The average lifespan of a smartphone is 2 years. I'll admit I've dropped it a bunch. I told my parents I exceeded that limit and they said that that's barely anything and my phone would still be great ignore I didn't drop it. Are they right for not letting me get a new phone?

No you should get a new phone but maybe they just can't afford it right now? I don't know but if you want a new one get a job so you won't have to ask them and you can get whatever you want

They are right for NOT wanting to PAY for your new phone, so buy it yourself. Problem solved.