Don't dread it - I did and it was completely unnecessary and made me stressed before I'd even started! As it happened, I found it incredibly easy.
Request lots of support in the first few days if you need it; I asked MW to pop over the day after the birth to give me some advice, it was all fine and pain free from there - some people do find it more challenging but don't assume (as I did) that it will be horrendous.
Sure it's tiring but having a baby is tiring regardless of how you feed them! Other than the responsibility for feeds being all on you, I don't think it's any more tiring than having to prepare and clean bottles before/after feeds. You literally need 10 seconds prep time to get your boob out and 10 seconds to put it away 
Once you get going, it is so easy. Food and comfort always ready for baby, anywhere you need it, and you never have to worry about running out/sterilising etc. No one ever batted an eyelid about my feeding in public and I never faffed with nursing clothes or cover ups - just wore two tops, with the one on the top slightly bigger/looser than the one underneath - pull the top one up and the bottom one down.
I recently discovered the cost of formula and was horrified, it's so expensive!
You do sacrifice independence, but as it turned out, I loved that I meant that I had to be with/near my baby. I thought I'd resent not being able to go out with friends and leave the baby with DH for a few hours, but I never did. I needed that closeness with my baby, but that's a very personal thing.
Ultimately, you need to feed your baby in a way that works for you. Think positively about the choice you have made at this stage, and see how it goes.