Children get ear infections partly because the fluid cannot efficiently drain from the nasal passages-sinuses down the throat. The backed up fluid can cause an infection and pressure in the ear drum. Children can grow out of this because the ear canal will grow and eventually the fluid will be able to drain effectively. However, this may be several years down the road. Additionally, this can become worse during the spring, summer and fall with the molds, pollen, cock roach dust and other common allergens. This causes more inflammation in the sinuses, cold symptoms and backed up drainage in the ear drums... thus ear infections. Therefore, ear tubes are an effective way to relieve the pressure and fluid in the ear drums. There is little risk with this procedure. It takes about 20 minutes. A very small hole is put in the ear drum with a lazer. A miniscule tube is put inside the hole to allow the fluid to drain out of the ear canal. This is a very effective way to address ear infections, and they will reduce dramatically after the insertion.
There is a possible problem with the ear tubes becoming clogged and the drainage may build again. Ear drops can loosen the clogged tubes. There is a possibility the tube falls out. This doesn't hurt. Sometimes they natually become dislodged. If the hole closes up, the tube may need to be replaced. If the hold does not close up, this becomes a natural way for the ear to express fluid. If the hole is too large or does not close up by about age 8, then the doctor may want to do a minor surgery to sew up the hole. There is a bit of ear pressure lost behind the ear drum if there is a hole there. This may reduce a little bit of hearing, but not enough to warrant a hearing aid... usually.
You may want to talk to an allergist or Ear, Nose and Throat specialist about these things.
My kids have had ear tubes twice each. They have fallen out, and they had them replaced. One tube fell out, and my son has a hole in his ear. I am careful not to let him near dirty water that could cause ear infections. Other than that there are no problems. The procedure for ear tubes took about 20 minutes. I gave them IBProfen for a day afterwards, and they seemed completely fine. They played and laughed after the procedure as if nothing had happened.