Cousins are like candy, the more you have, the better. They are sweet and sour and wonderful, some are squishy and some are hard. I hope you are blessed with many of them. Cousins can be like extra siblings or better. A cousin can be the sister or brother that you do not have. A cousin can be your first playmate and best friend.
How many cousins are enough? My children have 8 first cousins. I had 37 and my husband had almost that many too. Some of ours have passed away. Nearly all have married (a few multiple times) have children, grandchildren and even great grandchildren. All of which, equates to more cousins. No one has any control over how many cousins they have. You get what you get (many life lessons there).
Make time for your children to know their cousins, even the ones who live far away. Consider vacationing together or just visiting at their house. Invite them to your house. One precious memory I have was when my parents, siblings and their families went with my family to Starved Rock State Park to spend the day with my aunt, uncle and their children and grandchildren. I only wish we had done it more than once. Throughout our lives friends come and go and change, but cousins endure with us. Our common family history and experiences bond us together.
Connecting with cousins also gives us opportunities to relate to people beyond our own age and gender. I had far more boy cousins than girl cousins. I learned to interact and relate to my boy cousins in a very natural way without the weirdness that often accompanies cross-gender friendships. (At age 14 there was one whom I wished could have been my boyfriend). I recall having fun pestering some older cousins (trying to count freckles) and sometimes being thrilled and terrified by older cousins. I admired and adored them and loved being with them.
Among my grandchildren it is fun to watch the cousins play together. Generally the boys play with the boys and the girls with the girls. Younger and older play together. My heart is warmed at their friendships. I heard that last summer at junior high church camp my grandson and my petite granddaughter who are only 2 months apart in age but many inches apart in height hung out with each other and often sat together. He is caring and protective and she is sweetness. I am certain that at camp someday soon they will clearly identify each other as cousins.
Attend your family gatherings at holidays, weddings, showers, funerals, and reunions. If those really big gatherings are overwhelming, then plan some frequent little ones. May your family be a blessing in your life. If it is not, I give you my condolences, and may you have wisdom to set healthy boundaries.