Why is Destiny 2 so big?

Simple question really. Why is Destiny 2 so big? Its like 70 GB without any extras. Maybe its just me and my small hard drives. I have 1 TBmore that half full and another drive with 500 GB. I can only imagine that it has very high def textures and/or lots of content (i guess?).Curious to see what you guys think.

It has a huge open world, very HD textures, models and particle effects, along with a lot of voice lines, music etc. Worth the 70G

Open world boy there is soooo much content in such games its insane ik and ibalso hate tondownload rateher big gsmes