Should I get 16gb or 32gb for iPhone 5?

I currently have an iPhone 3GS, with only 8gb of space. I have about 850 songs, which takes up about 70%. I have a lot of pictures, and when I travel or go out I take a lot, so about 300 pictures since I first got the phone in 2010. That takes up about another quarter. I only have about 8 apps, I'm not really an "app" person so the most I'd ever have would probably be like 10-15.So basically I'm wondering, when I upgrade, should I get the 16gb or 32gb? I'm leaning towards 32 because I'm going to have it for the next few years and will of course be adding new music and pictures all the time. But the extra space is a lot of money, I'm just wondering if it's worth it! What do you think?

Added (1). Also I wouldn't watch movies or download music videos.

You can offload alot of those on your computer. You don't have to keep all of them on your phone.

Get a Samsung galaxy s3 not only is it better then the iPhone you can add memory by just sliding in a memory chip that can be bought easily and inexpensively.

That way you can get it when you need it and not cost you an arm and a leg up front.

Since you don't really have a lot of apps or videos, it would be fine if you get a 16gb. I currently have a 32gb iPod touch, and i have 1, 200 songs and that only takes up like 20%. But it really depends on if you never plan on cleaning out your pictures or transfering them to a computer. If you plan on keeping them all on your Phone for a few years, then go with the 32gb. It also feels nice to not have to worry about filling up your Phone and then having to stress about figuring out what you need to get rid of.

32gb is a great amount just to be safe, I've gotten the 16gb a few times and I always find myself getting really close to filling it. I got the 32gb once and never even got close to filling it… It seems like for you though 16gb should be enough because you don't have videos and you don't have many apps or songs which is what seems to take up most of my space