Nshah,
ekcerli kan..... personally, for me... tak kira anak 1 ke, 2 ke, 5 ke.... tetap sama.
for me, we must make time for each other. Not to make more anak, but release stress, keep the flame & passion, etc...
if both of you enjoy each other's company & put in the effort, anak dah 5 pun, masih sexually active...