Pros:
Probably the easiest 3D animation software to learn, valve have done the modeling and rigging for you + loads of good tutorials from the community.
Easiest software to do any source game fan art, easy to port the in-game assets to SFM
Feels great to move around with WASD, love the controls
Helpful community with a lot of brilliant content creators

Cons:
sometimes demanding on the hardware, opening large SFM projects takes too long.
sometimes it bugs out in strange ways, especially when recordings are involved.
porting non-source game content into SFM is hard to figure out.

Overall great software, could use some updates tho.

Pros: Probably the easiest 3D animation software to learn, valve have done the modeling and rigging for you + loads of good tutorials from the community. Easiest software to do any source game fan art, easy to port the in-game assets to SFM Feels great to move around with WASD, love the controls Helpful community with a lot of brilliant content creators Cons: sometimes demanding on the hardware, opening large SFM projects takes too long. sometimes it bugs out in strange ways, especially when recordings are involved. porting non-source game content into SFM is hard to figure out. Overall great software, could use some updates tho.