formula feeding my 2nd baby

hi all. I'm currently 6 weeks. I have a 2 (almost 3) year old that I'm still breastfeeding. usually just at night before bed. and occasionally during the day. but am I crazy selfish for wanting to formula feed my second baby? I just don't know if I want to breastfeed for 5 consecutive years haha... and weening my daughter has been pretty rough. I'd also really like the help of someone else (aka dad grandparents ect) to help feed this baby while I'm busy running after a toddler. any insight or comments are appreciated. thanks loves!