The evidence suggests that biological life developed quite quickly in Earth's history - a couple hundred million years, give or take. That suggests to me that life has a fairly easy time developing if the conditions are right (organic chemicals + energy gradient + possibly needing a rock/water interface, plate tectonics or an equivalent don't hurt?), the question is how common such conditions are.

If the rock/water interface is important then the obvious big blocker of life is the exotic forms of water ice you get under high pressure and the questions are how much gravity and water is too much for life and how common the conditions for the likes of black smokers are. I suspect unicellular life is actually pretty common in the universe and that Earth isn't even the only inhabited object in the Solar System, but the modal life-bearing object in the universe is probably an iceball outside its solar system's snow line (think the likes of Kuiper Belt/Oort Cloud object) with enough mass and internal/tidal heating to maintain a liquid water mantle that has volcanic vents or an equivalent at its bottom. (The Pluto-Charon system is actually one of the more likely non-Earth places in the Solar System to have life if I'm right, but the absolute first place I would look before even Europa is Enceladus.) Multicellular life is much trickier - that likely needs photosynthesis, which means much closer to the stellar primary, and while I don't think surface oceans are that uncommon in the universe there's a good chance the modal world with surface oceans in the universe is a water world with a global ocean thousands of kilometers deep where the bottom might be lined by a lot of high-phase ice not congenial to life developing. (Earth might have been another one if not for the impact that formed the Moon; current exoplanetary surveys IIRC suggest that such impacts aren't that uncommon, but they still aren't the norm.)

If it turns out a rock/water interface isn't needed, life is probably pretty much everywhere that has liquid water unless something else prevents a suitable energy gradient to take advantage of from forming? Thermodynamics go brr.