Paleobotanists do, and for good reason. Venture out into the wild and count how many animals you see. Now count the plants. Plants are everywhere. Plants are relatively common as fossils so when paleobotanists are reconstructing past environments, they have plenty of samples to examine.
Plants are also excellent indicators of the climate in which they live.
Leaves in temperate forests are usually smaller, with toothed margins and no drip tips. Leaves in arid areas are typically very small. By looking at characteristics of fossil leaves, paleobotanists can get a good feel for what the climate was like when those leaves were originally buried. Millions of years after their burial, fossil plants are most easily found in badlands, arid areas with soft bedrock. Badlands don't support much vegetation, and this means they expose plenty of bare rock that might be rich with fossils.