While I'd like to get out of MD someday soon (and I still think I probably will), there are good reasons to stay and that make leaving harder.
-I was born here and almost all my personal history is here.
-Guns aren't the only issue in the world and MD isn't all bad. All 4 seasons (none that are too bad). Central MD is very urban with many job, educational, recreational, entertainment, and cultural opportunities. You are a two hour drive from the mountains and seclusion, you are near some farm country if you want a country drive, and you are two hours from the beach. There are lots of good fishing and boating opportunities (many rivers, Deep Creek Lake- a large man-made lake in western MD, the Cheasapeake Bay, the Atlantic Ocean).
-Family. My parents and my brother are here.
-Many close friends. I do have close friends who have moved but none have gone to particularly good gun areas (CA, NJ, France, and Israel).
-Networking. For finding jobs networking can be your most valuable asset and your personal network tends to be where you live (though the internet can help with that somewhat).
-There is a strong Jewish community in Baltimore. Orthodox Judaism is a very communal religion, to the point where it is virtually impossible to practice properly in seclusion. You need a minyan for many prayers, you need to have access to kosher food, you need access to a shetznes lab (you can't have mixes of linen and wool threads in any garment, even in the lining). Shabbos is very different, and loses quite a lot, alone. The largest communities in the US aren't in areas that are much better (NY, LA, Chicago). Miami is the only large community in a truly good area for guns. However, there are a few good smaller Jewish communities in better gun areas (Pittsburgh, Philadelphia, Las Vegas, Memphis, Houston, Milwaulkee, St. Paul/Minneapolis), but none are nearly as strong as Baltimore.
-Moving out of state can be quite expensive.
-Finding a job in another state can be difficult and expensive.
-Moving before finding a job requires a fairly large amount of savings (and the willingness to risk needing to go through it all).
-If all conservatives, gun owners or moderates left the most liberal and anti-gun states it would be bad for the rest of the country. If you think those MD sends to office now are bad, just think who you'd get if only the far-left had a say here. Also, even in the most liberal states there are areas that are atypical and send conservatives to Congress. Would you really want all of MD's Representatives to be far-left Democrats and anti-gun?