Listen to this great podcast from On Point for reasons why you should care about monarchs.
Also, I encourage you to participate in citizen science! If you are seeing adult monarchs where you are right now, submit your observations to Journey North (I started doing this myself this year). This includes if you see a single one flying around (adult observation), or if you see large numbers of monarchs flying or roosting in trees at night (peak migration and fall roost). Just click on "Sightings" and create an account.
You can also submit observations in the spring of the first milkweed plants, eggs, caterpillars, and adults. This organization tracks the timing and numbers of butterflies in the monarch migration each year, which is very important for understanding how their numbers are declining.
For those of you east of the Rockies (where you will see monarchs that migrate to Mexico), I wish you happy monarch sightings now if you are in the Upper Midwest or New England, and over the next month if you live further south!
See my past monarch posts here and here.