Honestly, you need to go to practice and experience it yourself.
Please don't get me wrong before you start reading this, I love my job, I wouldn't want to do anything else in the world. However, it is tiring, you often have client limitations, you can never do enough for your patient's (often due to money), you have to deal with the fact your client 9 times out of 10 brings their pet in way too late (by which chance whatever they had sods law can't be sorted), you will see some absolutely horrific cases, you will have clients constantly calling you money-grabbing, you won't be able to do as much for welfare as you'd like to and that's without talking about the fact the hours can be terrible.
You'll be underpaid for what you do, and you'll spend the vast majority of your day putting things to sleep. There's a huge reason our profession has one of the highest suicide rates.
Really, please - please do not go into veterinary without having seen practice. This is a hard degree, easily on par with medicine, and if you don't truly love what you do (not just love animals, love the science behind it too) then you just won't get through it. Do yourself a favour, ring your local vets and get booked in for a few weeks shadowing. See how reality actually is. Don't be shocked if they try to put you off the career.