Some people do not like the taste of game meats, some do.
I am a newbie to hunting but have been an enthusiastic venison cooker and eater for many years. Before I started hunting, my folks had people hunt their land and give us meat, so I've been eating venison since I was a kid.
I agree with those who say that how the animal is killed and how it is prepped probably makes a difference. Still, some people will object to even the mildest tasting game meat.
For people who find it "challenging" or if you get an animal that is particularly strong tasting, try making strongly flavored dishes like marinades, chili, spaghetti, etc. Dishes that cook slowly for a longer time may also help.
Venison stroganoff is easy to cook and well tolerated by the game-averse. Look in any standard cookbook for a Beef Stroganoff recipe - or even, to make it really easy, just get those envelopes of pre-made stroganoff sauce plus noodles in the grocery store, cook the noodles and sauce according to directions, and add the sautee'd venison.
A marinade mix I really like is mostly worschestershire sauce with a large blob of dijon mustard and a small amount of balsamic vinegar. Dark beers, red wines, lemon juice, soy sauce, teriyaki sauce, and fruit juices (particularly pineapple) can all be used in marinades. My mother is a big fan of red wine and juniper berries in marinades.
If you want the marinade to penetrate deeply, cut the meat into smaller medallions instead of leaving it in great big chunks. Conversely, if you have a really good tasting animal that doesn't need much "help" you can get away with larger thicker cuts and cooking it a little more rare/pink inside. Cooking it like a steak (high heat, short cooking time) is for people who like the taste of game and/or a very mild-tasting animal.
I don't know if it really makes a difference or not, but I always trim my venison very carefully before cooking it. I pay particular attention to removing the muscle fascia - the white fibrous outer sheath of the muscle. Peel up a corner and work back and forth between the meat and the fascia with a smallish, very sharp knife. Do your trimming before marinating. This is something I learned from my dad, and I've never experimented with NOT doing it, so it is possible that this step doesn't really help. But I will say my dad cooks some of the best venison dishes I have ever had.
edited to add - I just saw "spooney" above is also a believer in removing the fascia. There probably is something to it. I wish I had a dime for every time I have heard a dinner guest tell my dad, "I don't like deer meat, but this is really good!" Maybe it is removing the fascia that makes the difference.