I strongly feel against a hybrid on group rides (with roadies). It will severely handicap you, unless you are already a prime cyclist (which is unlikely if you are just buying a bike right now). Road bikes are also more resistant than we tend to think (although jumping curbs should not necessarily be a frequent activity with 23C tires).
However, when I run errands around town, I still love to use my hybrid. I would also commute on a hybrid bike for the more upright position. There is no clear rationale for this because, when I am riding my road bike in traffic, I feel extremely confident, fast and happy, but I don't think I'd like to do this every day if I was using it to commute.
The only terrain where a hybrid will go and a road bike with 23C tires will not is soft gravel trails.
Depending on your budget, you could consider getting an inexpensive hybrid and an entry-level road bike, use both and decide which one you will upgrade in the future
You could also consider a cyclocross bike, if you are really interested in multi-terrain...
Enjoy!




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