I apologise if I am repeating anyone with what I am about to write but, let me try to give the simplest explanation possible.
Kit, do you plan on getting a powerful shield like
Ghostkershield and/or
Faerie Tabard eventually? If you do, then you have no choice but to train defence; they require defence for them to work at optimum level. If you rather go straight with percentage blockers and reflectors, then don't train defence. Use that money to train HPs and strength.
There is really nothing wrong with you not training your defence. It's just that if you don't train defence, it's better not to include any shields either becos to have little defence means your shields and dual duties will not effective.
Percentage blockers and reflectors are the best defence in the long run, true, but for now, you have to be realistic about the kind of budget and pet stats that you have currently. You cannot afford such weapons yet unless they are the fragile ones that disappears forever after a few uses, which means you will still end up spending a lot of money that way (money you could use to train on defense, perhaps?).
Concentrating on HPs and Strength to carry you through your battles is fine. Nothing wrong with that. It means you are focusing more on bringing your opponents health down to zero with an arsenal of powerful weapons first. That also means you are taking on THEIR attack fully, without ever repelling or blocking any hits (except by sink, burrow and any other species of faerie abilities your pet might have). With your current stats, you will realise how easily your opponent can kill you.
Yes, again I will say, reflectors and blockers can cover the defensive works, but you still need to take account of your budget. Remember, you are spending on training and attack weapons as well, so it will be a long, LONG time before you can look into purchasing something that is reliable.
That is why shields are sought after. They are far more affordable and usable to battlers while he or she works on trying to get a good set (that includes SEVERAL blockers and reflectors) and good stats (HPs and strength especially). However, to make shields effective, defence HAS to be trained.
That is the reason why people train defence. But in the end, it is up to you whether or not you want to do the same
