Ummm… I’ve been here on hairtell long enough to be well aware of LAgirl’s laser and electrolysis results. I know what her happiness level is with both modalities.
It’s not all about observation. There is data. I can list more references if you’d like. The information below is from Andrea’s sister site, Hairfacts.com.
Following a long absence from medical literature, electrolysis was once again taken up as an issue worthy of research in the latter part of the 20th century. [13, 14]. Good review articles by physicians [15, 16] complement the practice manuals by professional electrologists. [4, 6, 11]. The best electrolysis book written and edited by a physician is Richards. 
Electrolysis improperly performed or performed on non-normal skin can cause scarring,  spread infection,  and potentially cause isomorphic outbreaks or spread of lesions. 
One well-designed study found that about 2% of women under 50 who seek electrolysis have an undiagnosed glucose intolerance. 
Two studies, one small and one large, respectively demonstrated that 90% to 93% of consumers have satisfactory results [21, 22]
Two well-designed Japanese studies demonstrate permanence in treating underamrs. The thermolysis study showed “little to no regrowth” at 6 to 36 months after 3 to 8 treatments to the underarm.  The blend study observed no regrowth at 6 months after 7 to 14 treatments, while comparative plucking resulted in no significant hair removal at 6 months. 
Please see my selected list of published electrolysis medical literature.
Caldwell IW. The electronic pencil. British Medical Journal, 1972, 03 Jun(813):591-592.
Please see hairfacts.com for a discussion of home-use personal electrolysis units: cons and pros.
Gior F. Modern Electrology: Excess Hair, Its Causes and Treatments, 3d ed. 2000 and Published by Hair Publishing, Inc., Roslyn, New York 11576. (previous edition from Tarrytown NY: Milady Publishing, 1987) ISBN: 0-87350-413-5
Richards RN, Meharg GE. Cosmetic and Medical Electrolysis and Temporary Hair Removal: A practice manual and reference guide. Toronto: Medric Ltd. 1991. ISBN: 0-9694746-0-1. Pages 37-40.
Bono M. Real world electrology: the blend method. Santa Barbara, CA: Tortoise Press, 1994. ISBN: 0-9642682-0-5
But see Wagner RF Jr, Brysk H, Tyring SK. Revisiting the Michel/Green controversy of 1879: was Carron du Villards the first to use probe/needle electrolysis for permanent hair destruction? International Journal of Dermatology 1997 Dec;36(12):947-51.
Michel CE. Trichiasis and distichiasis; with an improved method for radical treatment. St. Louis Clinical Record, 1875 Oct; 2:145-148
Richards (1991) page 39. Available online via American Electrology Association.
Bordier H. [New treatment for hypertrichosis with diathermy]. Vie Medicale, 1924, 5:561 [article in French]
Hinkel AR, Lind RW. Electrolysis, Thermolysis and the Blend: the principles and practice of permanent hair removal. Los Angeles, CA: Arroway Publishers, 1968. ISBN 0-9600284-1-2
Please see hairfacts.com for a list of states that regulate electrolysis.
Chernosky ME. Permanent removal of superfluous hair. Texas Medicine, 1971, 67:72-78.
Johnson E. Epilation of growing hair follicles. Journal of Expermimental Zoology 1975 May;192(2):259-63.
Wagner RF Jr, Tomich JM, Grande DJ. Electrolysis and thermolysis for permanent hair removal. Journal of the American Academy of Dermatology 1985 Mar;12(3):441-9.
Hobbs ER, Ratz JL, James B. Electrosurgical epilation. Dermatologic Clinics 1987 Apr;5(2):437-44.
Vogt HJ [Formation of keloids after electroepilation]. [Article in German] Hautarzt 1973 May;24(5):203-4.
Ditmars DM Jr, Maguina P. Neck skin sporotrichosis after electrolysis. Plastic and Reconstructive Surgery 1998 Feb;101(2):504-6.
Petrozzi JW. Verrucae planae spread by electrolysis. Cutis, 1980, 26:85.
Dumesic DA, Herrmann RR, O’Brien AM. Estimated prevalence of undiagnosed glucose intolerance from hyperandrogenic anovulation among women requesting electrolysis. International Journal of Fertility and Womens Medicine 1997 Jul-Aug;42(4):255-60.
Verdich J [Treatment of hypertrichosis in women by means of electroepilation] Ugeskrift for Laeger, 141:2056-2057.
Richards RN, Meharg GE. Electrolysis: observations from 13 years and 140,000 hours of experience. Journal of the American Academy of Dermatology. 1995 Oct;33(4):662-6.
Kobayashi T, Kamiyama G. Electroepilation using insulated needles. Aesthetic Plastic Surgery 1987;11(4):223-7.
Urushibata O, Kase K. A comparative study of axillar hair removal in women: plucking versus the blend method. Journal of Dermatology 1995 Oct;22(10):738-42.