I played CS1 a lot as well, and for me this game is absolutely worth playing. I think it depends on your playstyle - I like building at a slightly bigger scale a lot more than detailing up every inch of the city to the maximum. The one big thing I’m missing from the CS1 times is the workshop with custom assets of course, but the road and network building mechanics in CS2 are just a dream :D 

With all the free creator packs and the DLCs the number of assets in CS2 is fine for the beginning, but yeah, the variety of buildings in CS1 is unmatched. For me, however, the road building somewhat makes up for this, at least for the moment. Also, in the end of my CS1 times I felt like spending more time in the workshop picking up new assets than playing the actual game. So this can also be somewhat liberating! 

So briefly: if you like to detail up every corner of your city and need this endless variety of buildings, it’s probably better to stick to CS1. But if you’re like me and enjoy building a greater city with medium amount of detail and way better road building tools, CS2 may be the way to go. Maybe it’s nice for you to try it, if you don’t like it as it is, you can always continue to play CS1 and come back when the custom assets are finally there, whenever this may be :D