For me, the decision to temp and use OPKs had other factors involved. I am 35. My mother went into peri-menopause at 38. DH is 43. I am older by 10 YEARS than any woman on EITHER side of my family to try to have a baby.
Throw in some other health factors and my dr strongly encouraged me to chart right away. We are even getting a pass on the regular "trying period" to have DH tested if we want.
We are not actually TTC until September - my dr wanted me off BCP for 3 cycles before we try. We are using condoms during the first part of my cycle through 48 hours after I O - despite the using protection again, we are still making DTD
fun and enjoying being together.
TTC doesn't have to be a chore, but you have to decide for yourself what is "too much" and if there is a need to have extra information on hand because of a situation that is unique to you and DH, like we have =)